Precalculus
Precalculus
17th Edition
ISBN: 9780078035609
Author: Miller, Julie, Gerken, Donna.
Publisher: Mcgraw-hill Education,
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Chapter 7.5, Problem 78PE
To determine

To calculate: The work done by an external force, F=28 lb , to move a block 20 ft along the ramp, if the force is applied at an angle of 45° above the ramp.

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Chapter 7 Solutions

Precalculus

Ch. 7.1 - Plot the points whose polar coordinates are given....Ch. 7.1 - Given 7,32 in polar coordinates, find two other...Ch. 7.1 - Convert the ordered pairs in polar coordinates to...Ch. 7.1 - Convert 2,23 from rectangular coordinates to polar...Ch. 7.1 - Prob. 5SPCh. 7.1 - Write an equivalent equation using polar...Ch. 7.1 - Prob. 1PECh. 7.1 - Given a point P represented by the ordered pair r,...Ch. 7.1 - To convert an ordered pair r, in polar coordinates...Ch. 7.1 - To convert an ordered pair x,y in polar...
Ch. 7.1 - Use an equation in polar coordinates to describe...Ch. 7.1 - Prob. 6PECh. 7.1 - Prob. 7PECh. 7.1 - For Exercises 7-14, match each point in polar...Ch. 7.1 - For Exercises 7-14, match each point in polar...Ch. 7.1 - For Exercises 7-14, match each point in polar...Ch. 7.1 - For Exercises 7-14, match each point in polar...Ch. 7.1 - For Exercises 7-14, match each point in polar...Ch. 7.1 - For Exercises 7-14, match each point in polar...Ch. 7.1 - For Exercises 7-14, match each point in polar...Ch. 7.1 - Prob. 15PECh. 7.1 - For Exercises 15-18, plot the points whose polar...Ch. 7.1 - Prob. 17PECh. 7.1 - For Exercises 15-18, plot the points whose polar...Ch. 7.1 - For Exercises 19-22, given a point in polar...Ch. 7.1 - For Exercises 19-22. given a point in polar...Ch. 7.1 - For Exercises 19-22, given a point in polar...Ch. 7.1 - For Exercises 19-22, given a point in polar...Ch. 7.1 - For Exercises 23-32, convert the ordered pair in...Ch. 7.1 - For Exercises 23-32, convert the ordered pair in...Ch. 7.1 - Prob. 25PECh. 7.1 - For Exercises 23-32, convert the ordered pair in...Ch. 7.1 - For Exercises 23-32, convert the ordered pair in...Ch. 7.1 - For Exercises 23-32, convert the ordered pair in...Ch. 7.1 - For Exercises 23-32, convert the ordered pair in...Ch. 7.1 - For Exercises 23-32, convert the ordered pair in...Ch. 7.1 - For Exercises 23-32, convert the ordered pair in...Ch. 7.1 - Prob. 32PECh. 7.1 - Prob. 33PECh. 7.1 - For Exercises 33-38, convert the ordered pair in...Ch. 7.1 - For Exercises 33-38, convert the ordered pair in...Ch. 7.1 - Prob. 36PECh. 7.1 - Prob. 37PECh. 7.1 - For Exercises 33-38, convert the ordered pair in...Ch. 7.1 - For Exercises 39-44, convert the ordered pair in...Ch. 7.1 - For Exercises 39-44, convert the ordered pair in...Ch. 7.1 - Prob. 41PECh. 7.1 - For Exercises 39-44, convert the ordered pair in...Ch. 7.1 - For Exercises 39-44, convert the ordered pair in...Ch. 7.1 - For Exercises 39-44, convert the ordered pair in...Ch. 7.1 - Prob. 45PECh. 7.1 - Prob. 46PECh. 7.1 - For Exercises 45-56, write an equivalent equation...Ch. 7.1 - For Exercises 45-56, write an equivalent equation...Ch. 7.1 - Prob. 49PECh. 7.1 - Prob. 50PECh. 7.1 - For Exercises 45-56, write an equivalent equation...Ch. 7.1 - Prob. 52PECh. 7.1 - Prob. 53PECh. 7.1 - Prob. 54PECh. 7.1 - Prob. 55PECh. 7.1 - Prob. 56PECh. 7.1 - For Exercises 57-70, convert the polar equation to...Ch. 7.1 - For Exercises 57-70, convert the polar equation to...Ch. 7.1 - For Exercises 57-70, convert the polar equation to...Ch. 7.1 - For Exercises 57-70, convert the polar equation to...Ch. 7.1 - For Exercises 57-70, convert the polar equation to...Ch. 7.1 - For Exercises 57-70, convert the polar equation to...Ch. 7.1 - Prob. 63PECh. 7.1 - For Exercises 57-70, convert the polar equation to...Ch. 7.1 - For Exercises 57-70, convert the polar equation to...Ch. 7.1 - Prob. 66PECh. 7.1 - Prob. 67PECh. 7.1 - For Exercises 57-70, convert the polar equation to...Ch. 7.1 - For Exercises 57-70, convert the polar equation to...Ch. 7.1 - For Exercises 57-70, convert the polar equation to...Ch. 7.1 - Suppose that the polar axis is positioned to...Ch. 7.1 - Prob. 72PECh. 7.1 - For Exercises 73-76, determine whether the two...Ch. 7.1 - Prob. 74PECh. 7.1 - For Exercises 73-76, determine whether the two...Ch. 7.1 - For Exercises 73-76, determine whether the two...Ch. 7.1 - For Exercises 77-78, determine whether the...Ch. 7.1 - For Exercises 77-78, determine whether the...Ch. 7.1 - For Exercises 79-82, a point in polar coordinates...Ch. 7.1 - Prob. 80PECh. 7.1 - For Exercises 79-82, a point in polar coordinates...Ch. 7.1 - For Exercises 79-82, a point in polar coordinates...Ch. 7.1 - For Exercises 83-88, describe the graph of the set...Ch. 7.1 - For Exercises 83-88, describe the graph of the set...Ch. 7.1 - For Exercises 83-88, describe the graph of the set...Ch. 7.1 - For Exercises 83-88, describe the graph of the set...Ch. 7.1 - For Exercises 83-88, describe the graph of the set...Ch. 7.1 - For Exercises 83-88, describe the graph of the set...Ch. 7.1 - Suppose that seating in a theater is in an area...Ch. 7.1 - A rotating sprinkler spreads water over an area...Ch. 7.1 - A player in a video game must knock out a target...Ch. 7.1 - Prob. 92PECh. 7.1 - Explain the significance of r0 in an ordered pair...Ch. 7.1 - Explain why a point in the plane can be...Ch. 7.1 - Prob. 95PECh. 7.1 - Use the results of Exercise 95. a. If 1=2 what is...Ch. 7.1 - Given points Pr1,1 and Qr2,2 represented in polar...Ch. 7.1 - Use the results of Exercise 97. Find the distance...Ch. 7.1 - Prob. 99PECh. 7.1 - For Exercises 99-102, use a graphing utility to...Ch. 7.1 - For Exercises 99-102, use a graphing utility to...Ch. 7.1 - For Exercises 99-102, use a graphing utility to...Ch. 7.2 - Graph r=4cos .Ch. 7.2 - Graph r=3+3sin .Ch. 7.2 - Graph r=1+4cos .Ch. 7.2 - Prob. 4SPCh. 7.2 - Graph r2=25cos2 .Ch. 7.2 - Graph r=0.8 for 0 .Ch. 7.2 - Prob. 1PECh. 7.2 - If replacing r, by r, in a polar equation results...Ch. 7.2 - Prob. 3PECh. 7.2 - Prob. 4PECh. 7.2 - Determining the ordered pairs for which r=0 in a...Ch. 7.2 - Prob. 6PECh. 7.2 - Prob. 7PECh. 7.2 - Prob. 8PECh. 7.2 - Prob. 9PECh. 7.2 - Prob. 10PECh. 7.2 - Prob. 11PECh. 7.2 - Prob. 12PECh. 7.2 - Prob. 13PECh. 7.2 - Prob. 14PECh. 7.2 - Prob. 15PECh. 7.2 - For Exercises 15-22, determine whether the tests...Ch. 7.2 - For Exercises 15-22, determine whether the tests...Ch. 7.2 - For Exercises 15-22, determine whether the tests...Ch. 7.2 - For Exercises 15-22, determine whether the tests...Ch. 7.2 - For Exercises 15-22, determine whether the tests...Ch. 7.2 - For Exercises 15-22, determine whether the tests...Ch. 7.2 - For Exercises 15-22, determine whether the tests...Ch. 7.2 - For Exercises 23-30, use symmetry to graph the...Ch. 7.2 - Prob. 24PECh. 7.2 - For Exercises 23-30, use symmetry to graph the...Ch. 7.2 - For Exercises 23-30, use symmetry to graph the...Ch. 7.2 - For Exercises 23-30, use symmetry to graph the...Ch. 7.2 - For Exercises 23-30, use symmetry to graph the...Ch. 7.2 - For Exercises 23-30, use symmetry to graph the...Ch. 7.2 - Prob. 30PECh. 7.2 - Prob. 31PECh. 7.2 - Prob. 32PECh. 7.2 - Prob. 33PECh. 7.2 - Prob. 34PECh. 7.2 - Prob. 35PECh. 7.2 - Prob. 36PECh. 7.2 - Prob. 37PECh. 7.2 - Prob. 38PECh. 7.2 - Prob. 39PECh. 7.2 - Prob. 40PECh. 7.2 - Prob. 41PECh. 7.2 - Prob. 42PECh. 7.2 - Prob. 43PECh. 7.2 - Prob. 44PECh. 7.2 - For Exercises 43-46, graph the polar curve. (See...Ch. 7.2 - For Exercises 43-46, graph the polar curve. (See...Ch. 7.2 - For Exercises 47-52, for the purpose of...Ch. 7.2 - For Exercises 47-52, for the purpose of...Ch. 7.2 - For Exercises 47-52, for the purpose of...Ch. 7.2 - For Exercises 47-52, for the purpose of...Ch. 7.2 - For Exercises 47-52, for the purpose of...Ch. 7.2 - For Exercises 47-52, for the purpose of...Ch. 7.2 - Prob. 53PECh. 7.2 - Prob. 54PECh. 7.2 - Prob. 55PECh. 7.2 - Prob. 56PECh. 7.2 - A quilter wants to make a design in the shape of a...Ch. 7.2 - The outline of a propeller on an airplane is in...Ch. 7.2 - a. Given r=8sin4 , determine the set of values of ...Ch. 7.2 - a. Given r=6sin3 , determine the set of values of ...Ch. 7.2 - If r=fsin , that is, if r is expressed as a...Ch. 7.2 - Prob. 62PECh. 7.2 - Prob. 63PECh. 7.2 - Prob. 64PECh. 7.2 - For Exercises 63-66, use the results of Exercises...Ch. 7.2 - For Exercises 63-66, use the results of Exercises...Ch. 7.2 - Given r=1+sec (conchoids), a. For what value(s) of...Ch. 7.2 - Given r=2 (hyperbolic spiral), a. For what value...Ch. 7.2 - Use a graphing utility to graph the equations on...Ch. 7.2 - Use a graphing utility to graph the equations on...Ch. 7.2 - A logarithmic spiral is represented by r=aeb . a....Ch. 7.2 - An Archimedean spiral is represented by r=a . a....Ch. 7.2 - Graph the limaqons given by the equation r=a+bcos...Ch. 7.2 - Graph the limacons given by the equation r=a+bcos...Ch. 7.2 - Find the values of on the interval 0,2 for which...Ch. 7.2 - Find the values of on the interval 0,2 for which...Ch. 7.2 - Given r=6cos2 , a. Replace r, by r, in the...Ch. 7.2 - Given r=4sin4 , a. Replace r, by r, in the...Ch. 7.2 - The graph of r=4cos2 is shown. a. Is 4,2 a...Ch. 7.2 - Prob. 80PECh. 7.2 - a. Match the polar or rectangular equation on the...Ch. 7.2 - Prob. 2PRECh. 7.2 - Prob. 3PRECh. 7.2 - a. Match the polar or rectangular equation on the...Ch. 7.2 - Prob. 5PRECh. 7.2 - Prob. 6PRECh. 7.2 - Prob. 7PRECh. 7.2 - a. Match the polar or rectangular equation on the...Ch. 7.2 - Prob. 9PRECh. 7.2 - Prob. 10PRECh. 7.2 - Prob. 11PRECh. 7.2 - Prob. 12PRECh. 7.2 - Prob. 13PRECh. 7.3 - Graph the complex numbers in the complex plane. a....Ch. 7.3 - Find the modulus. a. z=512i b. z=4+6iCh. 7.3 - Write the complex number in polar form. a. z=1i b....Ch. 7.3 - Write z=6cos150+isin150 in rectangular form.Ch. 7.3 - Given z1=3cos12+isin12 and z2=2cos6+isin6 , find...Ch. 7.3 - Given z1=18cos75+isin75 and z2=2cos255+isin255 ,...Ch. 7.3 - Compute 4cos70+isin703 and write the result in...Ch. 7.3 - Compute 22i4 and write the result in rectangular...Ch. 7.3 - Find the cube roots of 64 over the set of complex...Ch. 7.3 - Find the fourth roots of 3+33i over the set of...Ch. 7.3 - The complex plane has two axes. The horizontal...Ch. 7.3 - Prob. 2PECh. 7.3 - The rectangular form of a complex number z is a+bi...Ch. 7.3 - Given z=rcos+isin , the value r is called the of z...Ch. 7.3 - If z1=r1cos1+isin1 and z2=r2cos2+isin2 , then...Ch. 7.3 - If z=rcos+isin , then zn = for a positive integer...Ch. 7.3 - For Exercises 7-8, graph the complex numbers in...Ch. 7.3 - Prob. 8PECh. 7.3 - For Exercises 9-14, find the modulus of each...Ch. 7.3 - For Exercises 9-14, find the modulus of each...Ch. 7.3 - Prob. 11PECh. 7.3 - Prob. 12PECh. 7.3 - Prob. 13PECh. 7.3 - For Exercises 9-14, find the modulus of each...Ch. 7.3 - Prob. 15PECh. 7.3 - Prob. 16PECh. 7.3 - Prob. 17PECh. 7.3 - Prob. 18PECh. 7.3 - Prob. 19PECh. 7.3 - Prob. 20PECh. 7.3 - For Exercises 15-22, write the complex number in...Ch. 7.3 - Prob. 22PECh. 7.3 - For Exercises 23-30, convert the complex number...Ch. 7.3 - For Exercises 23-30, convert the complex number...Ch. 7.3 - For Exercises 23-30, convert the complex number...Ch. 7.3 - For Exercises 23-30, convert the complex number...Ch. 7.3 - For Exercises 23-30, convert the complex number...Ch. 7.3 - Prob. 28PECh. 7.3 - For Exercises 23-30, convert the complex number...Ch. 7.3 - For Exercises 23-30, convert the complex number...Ch. 7.3 - Prob. 31PECh. 7.3 - Prob. 32PECh. 7.3 - For Exercises 31-42, given complex numbers z1 and...Ch. 7.3 - For Exercises 31-42, given complex numbers z1 and...Ch. 7.3 - Prob. 35PECh. 7.3 - Prob. 36PECh. 7.3 - For Exercises 31-42, given complex numbers z1 and...Ch. 7.3 - For Exercises 31-42, given complex numbers z1 and...Ch. 7.3 - For Exercises 31-42, given complex numbers z1 and...Ch. 7.3 - Prob. 40PECh. 7.3 - Prob. 41PECh. 7.3 - For Exercises 31-42, given complex numbers z1 and...Ch. 7.3 - For Exercises 43-52, use De Moivre's theorem to...Ch. 7.3 - For Exercises 43-52, use De Moivre's theorem to...Ch. 7.3 - Prob. 45PECh. 7.3 - For Exercises 43-52, use De Moivre's theorem to...Ch. 7.3 - For Exercises 43-52, use De Moivre's theorem to...Ch. 7.3 - For Exercises 43-52, use De Moivre's theorem to...Ch. 7.3 - For Exercises 43-52, use De Moivre's theorem to...Ch. 7.3 - For Exercises 43-52, use De Moivre's theorem to...Ch. 7.3 - For Exercises 43-52, use De Moivre's theorem to...Ch. 7.3 - For Exercises 43-52, use De Moivre's theorem to...Ch. 7.3 - When expressing the fourth roots wk of a complex...Ch. 7.3 - When expressing the fifth roots Wk of a complex...Ch. 7.3 - For Exercises 55-60, the indicated complex roots...Ch. 7.3 - For Exercises 55-60, the indicated complex roots...Ch. 7.3 - For Exercises 55-60, the indicated complex roots...Ch. 7.3 - For Exercises 55-60, the indicated complex roots...Ch. 7.3 - For Exercises 55-60, the indicated complex roots...Ch. 7.3 - For Exercises 55-60, the indicated complex roots...Ch. 7.3 - For Exercises 61-64, find the indicated complex...Ch. 7.3 - For Exercises 61-64, find the indicated complex...Ch. 7.3 - For Exercises 61-64, find the indicated complex...Ch. 7.3 - For Exercises 61-64, find the indicated complex...Ch. 7.3 - For Exercises 55-60, the indicated complex roots...Ch. 7.3 - For Exercises 55-60, the indicated complex roots...Ch. 7.3 - Prob. 67PECh. 7.3 - Prob. 68PECh. 7.3 - For Exercises 65-70, find the indicated complex...Ch. 7.3 - For Exercises 65-70, find the indicated complex...Ch. 7.3 - The square roots, cube roots, and fourth roots of...Ch. 7.3 - Use the results of Exercise 71 to find the fifth...Ch. 7.3 - Prob. 73PECh. 7.3 - Use De Moivre's theorem to show that 1i is a cube...Ch. 7.3 - For Exercises 75-78, shade the area in the complex...Ch. 7.3 - Prob. 76PECh. 7.3 - Prob. 77PECh. 7.3 - Prob. 78PECh. 7.3 - Prob. 79PECh. 7.3 - Prob. 80PECh. 7.3 - Prob. 81PECh. 7.3 - For Exercises 79-82, convert the complex number...Ch. 7.3 - Prob. 83PECh. 7.3 - Given z1=2+2i and z2=3i , a. Find z1z2 by dividing...Ch. 7.3 - Let Z1=r1cos1+isin1 and Z2=r2cos2+sin2 .Prove...Ch. 7.3 - Show that Z1=rcos+isin and Z2=rcos=isin are...Ch. 7.3 - Let z=rcos+isin . a.Prove that z1=r1cos+isin b....Ch. 7.3 - Use De Moivre's theorem to find the indicated...Ch. 7.3 - For Exercises 89-92, simplify and write the...Ch. 7.3 - For Exercises 89-92, simplify and write the...Ch. 7.3 - For Exercises 89-92, simplify and write the...Ch. 7.3 - For Exercises 89-92, simplify and write the...Ch. 7.3 - Solve x6=64 by factoring and applying the zero...Ch. 7.3 - Solve x3=64 by factoring and applying the zero...Ch. 7.3 - Prob. 95PECh. 7.3 - For Exercises 95-98, find all complex solutions to...Ch. 7.3 - Prob. 97PECh. 7.3 - For Exercises 95-98, find all complex solutions to...Ch. 7.3 - How is the absolute value of a complex number...Ch. 7.3 - Is the polar representation of a complex number...Ch. 7.3 - Euler's formula states that ei=cos+isin . a....Ch. 7.3 - In calculus, we can show that...Ch. 7.3 - Show that 3ei/12 is a solution to z881z4+6561=0 .Ch. 7.3 - Show that e7i/12 is a solution to z8z4+1=0.Ch. 7.4 - Prob. 1SPCh. 7.4 - Suppose that vector v has initial point 4,5 and...Ch. 7.4 - Prob. 3SPCh. 7.4 - Given a=11,7 and b=4,6 , find a. 6a b. 3a+10bCh. 7.4 - Prob. 5SPCh. 7.4 - Prob. 6SPCh. 7.4 - Prob. 7SPCh. 7.4 - A ball is thrown from a height of 1m . At the time...Ch. 7.4 - A plane travels with an air speed of 400 knots at...Ch. 7.4 - Prob. 10SPCh. 7.4 - Prob. 11SPCh. 7.4 - Prob. 12SPCh. 7.4 - A is a quantity that has magnitude only, whereas...Ch. 7.4 - Given a vector AB the initial point is and the...Ch. 7.4 - The ofAB of is the length of the vector and is...Ch. 7.4 - For a real number k, the vector kv is in the same...Ch. 7.4 - Two vectors r=a1,b1 and s=a2,b2 are equal if .Ch. 7.4 - Prob. 9PECh. 7.4 - Prob. 10PECh. 7.4 - For Exercises 11-16, vector v has initial point P...Ch. 7.4 - For Exercises 11-16, vector v has initial point P...Ch. 7.4 - For Exercises 11-16, vector v has initial point P...Ch. 7.4 - Prob. 14PECh. 7.4 - For Exercises 11-16, vector v has initial point P...Ch. 7.4 - Prob. 16PECh. 7.4 - Prob. 17PECh. 7.4 - Prob. 18PECh. 7.4 - For Exercises 17-20, refer to vectors v and w in...Ch. 7.4 - Prob. 20PECh. 7.4 - Prob. 21PECh. 7.4 - Prob. 22PECh. 7.4 - Prob. 23PECh. 7.4 - Prob. 24PECh. 7.4 - Prob. 25PECh. 7.4 - Prob. 26PECh. 7.4 - Prob. 27PECh. 7.4 - Given vector v with initial point 17,80 and...Ch. 7.4 - Given v=17,29 with initial point 4,10 , find the...Ch. 7.4 - Given v=5,8 with initial point1,7 , find the...Ch. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - Prob. 39PECh. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - Prob. 42PECh. 7.4 - Prob. 43PECh. 7.4 - Prob. 44PECh. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - For Exercises 31-46, perform the indicated...Ch. 7.4 - For Exercises 47-54, let c and d be scalars and...Ch. 7.4 - For Exercises 47-54, let c and d be scalars and...Ch. 7.4 - For Exercises 47-54, let c and d be scalars and...Ch. 7.4 - For Exercises 47-54, let c and d be scalars and...Ch. 7.4 - Prob. 51PECh. 7.4 - For Exercises 47-54, let c and d be scalars and...Ch. 7.4 - Prob. 53PECh. 7.4 - For Exercises 47-54, let c and d be scalars and...Ch. 7.4 - Prob. 55PECh. 7.4 - Prob. 56PECh. 7.4 - Prob. 57PECh. 7.4 - For Exercises 55-60, find a unit vector in the...Ch. 7.4 - Prob. 59PECh. 7.4 - Prob. 60PECh. 7.4 - For Exercises 61-68, perform the indicated...Ch. 7.4 - For Exercises 61-68, perform the indicated...Ch. 7.4 - For Exercises 61-68, perform the indicated...Ch. 7.4 - For Exercises 61-68, perform the indicated...Ch. 7.4 - For Exercises 61-68, perform the indicated...Ch. 7.4 - For Exercises 61-68, perform the indicated...Ch. 7.4 - For Exercises 61-68, perform the indicated...Ch. 7.4 - For Exercises 61-68, perform the indicated...Ch. 7.4 - For Exercises 69-74.write the vector v in the form...Ch. 7.4 - Prob. 70PECh. 7.4 - Prob. 71PECh. 7.4 - Prob. 72PECh. 7.4 - Prob. 73PECh. 7.4 - Prob. 74PECh. 7.4 - Prob. 75PECh. 7.4 - Prob. 76PECh. 7.4 - Prob. 77PECh. 7.4 - Prob. 78PECh. 7.4 - Prob. 79PECh. 7.4 - Prob. 80PECh. 7.4 - Prob. 81PECh. 7.4 - Prob. 82PECh. 7.4 - A punter kicks a football with an initial velocity...Ch. 7.4 - The velocity of a ship is given by the vector...Ch. 7.4 - Prob. 85PECh. 7.4 - A plane flies at a speed of 370 mph on a bearing...Ch. 7.4 - A swimmer swims 1.5 mph in still water and wants...Ch. 7.4 - A boat that travels 6 mph in still water leaves a...Ch. 7.4 - For Exercises 89-94, the given forces (in units of...Ch. 7.4 - Prob. 90PECh. 7.4 - Prob. 91PECh. 7.4 - Prob. 92PECh. 7.4 - For Exercises 89-94, the given forces (in units of...Ch. 7.4 - For Exercises 89-94, the given forces (in units of...Ch. 7.4 - Prob. 95PECh. 7.4 - Prob. 96PECh. 7.4 - For Exercises 97-102, refer to vectors t, u, v,...Ch. 7.4 - For Exercises 97-102, refer to vectors t, u, v,...Ch. 7.4 - For Exercises 97-102, refer to vectors t, u, v,...Ch. 7.4 - For Exercises 97-102, refer to vectors t, u, v,...Ch. 7.4 - For Exercises 97-102, refer to vectors t, u, v,...Ch. 7.4 - For Exercises 97-102, refer to vectors t, u, v,...Ch. 7.4 - A kayaker paddles 3 mph in still water. If she...Ch. 7.4 - A long-distance swimmer swims 2 mph in still...Ch. 7.4 - Prob. 105PECh. 7.4 - For Exercises 105-106, two vectors v and w act on...Ch. 7.4 - Prob. 107PECh. 7.4 - Explain how the sum v+w is found geometrically.Ch. 7.4 - Prob. 109PECh. 7.4 - Prob. 110PECh. 7.4 - For Exercises 111-112, assume that the system is...Ch. 7.4 - For Exercises 111-112, assume that the system is...Ch. 7.4 - A 50 -lb box is supported by two ropes attached to...Ch. 7.4 - A tightrope walker and the balance bar together...Ch. 7.5 - Given v=2,6 andw=3,1 , find a. vw b. wv c.vv d. vCh. 7.5 - Prob. 2SPCh. 7.5 - Determine if the given vectors are orthogonal, a....Ch. 7.5 - Repeat Example 4 with v=7,3 and w=2,6 .Ch. 7.5 - Repeat Example 5 with a 1400 -lb SUV parked on a...Ch. 7.5 - Prob. 6SPCh. 7.5 - Prob. 7SPCh. 7.5 - The dot product of v = a1,b1 and w = a2,b2 equals ...Ch. 7.5 - If is the angle between two nonzero vectors v and...Ch. 7.5 - Prob. 3PECh. 7.5 - Two vectors are said to be if and only if they...Ch. 7.5 - The projection of a nonzero vector v onto a...Ch. 7.5 - Suppose that D is the displacement vector of an...Ch. 7.5 - For Exercises 7-14.for the given vectors, find a....Ch. 7.5 - For Exercises 7-14.for the given vectors, find a....Ch. 7.5 - Prob. 9PECh. 7.5 - For Exercises 7-14. for the given vectors, find a....Ch. 7.5 - Prob. 11PECh. 7.5 - For Exercises 7-14. for the given vectors, find a....Ch. 7.5 - For Exercises 7-14. for the given vectors, find a....Ch. 7.5 - For Exercises 7-14. for the given vectors, find a....Ch. 7.5 - For Exercises 15-18, use the dot product to find...Ch. 7.5 - Prob. 16PECh. 7.5 - Prob. 17PECh. 7.5 - Prob. 18PECh. 7.5 - Prob. 19PECh. 7.5 - Prob. 20PECh. 7.5 - Prob. 21PECh. 7.5 - Prob. 22PECh. 7.5 - Prob. 23PECh. 7.5 - Prob. 24PECh. 7.5 - Prob. 25PECh. 7.5 - Prob. 26PECh. 7.5 - Prob. 27PECh. 7.5 - Prob. 28PECh. 7.5 - For Exercises 29-32, let v=a1,b1,w=a2,b2,u=a3,b3 ,...Ch. 7.5 - For Exercises 29-32, let v=a1,b1,w=a2,b2,u=a3,b3 ,...Ch. 7.5 - Prob. 31PECh. 7.5 - For Exercises 29-32, let v=a1,b1,w=a2,b2,u=a3,b3 ,...Ch. 7.5 - Prob. 33PECh. 7.5 - Prob. 34PECh. 7.5 - For Exercises 35-40, find the angle between v and...Ch. 7.5 - For Exercises 35-40, find the angle between v and...Ch. 7.5 - For Exercises 35-40, find the angle between v and...Ch. 7.5 - For Exercises 35-40, find the angle between v and...Ch. 7.5 - For Exercises 35-40, find the angle between v and...Ch. 7.5 - For Exercises 35-40, find the angle between v and...Ch. 7.5 - If v=10 and w=6 and the angle between v and w is...Ch. 7.5 - If v=2.6 and w=8 and the angle between v and w is...Ch. 7.5 - Prob. 43PECh. 7.5 - For Exercises 43-50, determine if the given...Ch. 7.5 - For Exercises 43-50, determine if the given...Ch. 7.5 - Prob. 46PECh. 7.5 - For Exercises 43-50, determine if the given...Ch. 7.5 - For Exercises 43-50, determine if the given...Ch. 7.5 - Prob. 49PECh. 7.5 - For Exercises 43-50, determine if the given...Ch. 7.5 - Given v=3,6 and w=1,3 , a. Find projwv . (See...Ch. 7.5 - Given v=4,3 and w=2,2 , a. Find projwv . b. Find...Ch. 7.5 - Given v=4i+9j and w=2ij , a. Find projwv . b. Find...Ch. 7.5 - Prob. 54PECh. 7.5 - A boat and trailer weighing a total of 450lb are...Ch. 7.5 - A forklift is used to offload freight from a...Ch. 7.5 - Prob. 57PECh. 7.5 - Prob. 58PECh. 7.5 - a. Find the amount of work done in lifting a 50lb...Ch. 7.5 - a. Find the amount of work done pulling an object...Ch. 7.5 - Prob. 61PECh. 7.5 - For Exercises 61-64, find the work done by the...Ch. 7.5 - Prob. 63PECh. 7.5 - Prob. 64PECh. 7.5 - For Exercises 65-68, find the work w done by a...Ch. 7.5 - For Exercises 65-68, find the work w done by a...Ch. 7.5 - For Exercises 65-68, find the work w done by a...Ch. 7.5 - Prob. 68PECh. 7.5 - Prob. 69PECh. 7.5 - For Exercises 69-72, find the work done by a force...Ch. 7.5 - Prob. 71PECh. 7.5 - For Exercises 69-72, find the work done by a force...Ch. 7.5 - Prob. 73PECh. 7.5 - Prob. 74PECh. 7.5 - Prob. 75PECh. 7.5 - A child exerts a force of 28N on the handle of a...Ch. 7.5 - Prob. 77PECh. 7.5 - Prob. 78PECh. 7.5 - Given v=22i55j and w=4i+10j , a. Find the angle...Ch. 7.5 - Prob. 80PECh. 7.5 - Prob. 81PECh. 7.5 - Given c=5,12 and d=10,24 , a. Find the product cd...Ch. 7.5 - If projwv=v , what do you know about v and w?Ch. 7.5 - If projwv=0 , what do you know about v and w?Ch. 7.5 - Given v=4i10j , a. Find two vectors parallel to v,...Ch. 7.5 - Given v=3i9j , a. Find two vectors parallel to v,...Ch. 7.5 - The dot product of vectors can be used in business...Ch. 7.5 - Prob. 88PECh. 7.5 - Prob. 89PECh. 7.5 - Prob. 90PECh. 7.5 - Prob. 91PECh. 7.5 - The individual in Exercise 91 is directed to lose...Ch. 7.5 - Prob. 93PECh. 7.5 - Explain what is meant by decomposing a nonzero...Ch. 7.5 - Prove that v-w2=v2+w22vw .Ch. 7.5 - Prob. 98PECh. 7.5 - Prob. 99PECh. 7.5 - Prob. 100PECh. 7 - For Exercises 1-2, given a point in polar...Ch. 7 - For Exercises 1-2, given a point in polar...Ch. 7 - For Exercises 3-4, convert the ordered pair in...Ch. 7 - For Exercises 3-4, convert the ordered pair in...Ch. 7 - For Exercises 5-6, convert the ordered pair in...Ch. 7 - For Exercises 5-6, convert the ordered pair in...Ch. 7 - For Exercises 7-12, write an equivalent equation...Ch. 7 - For Exercises 7-12, write an equivalent equation...Ch. 7 - For Exercises 7-12, write an equivalent equation...Ch. 7 - Prob. 10RECh. 7 - Prob. 11RECh. 7 - For Exercises 7-12, write an equivalent equation...Ch. 7 - For Exercises 13-16, convert the polar equation to...Ch. 7 - For Exercises 13-16, convert the polar equation to...Ch. 7 - For Exercises 13-16, convert the polar equation to...Ch. 7 - For Exercises 13-16, convert the polar equation to...Ch. 7 - Prob. 17RECh. 7 - Prob. 18RECh. 7 - Prob. 19RECh. 7 - Prob. 20RECh. 7 - Prob. 21RECh. 7 - Prob. 22RECh. 7 - Prob. 23RECh. 7 - Prob. 24RECh. 7 - Prob. 25RECh. 7 - Prob. 26RECh. 7 - For Exercises 27-30, determine whether the tests...Ch. 7 - For Exercises 27-30, determine whether the tests...Ch. 7 - For Exercises 27-30, determine whether the tests...Ch. 7 - For Exercises 27-30, determine whether the tests...Ch. 7 - For Exercises 31-32, find the modulus of each...Ch. 7 - Prob. 32RECh. 7 - Prob. 33RECh. 7 - For Exercises 33-34, convert the complex number...Ch. 7 - For Exercises 35-36, given complex numbers z1 and...Ch. 7 - For Exercises 35-36, given complex numbers z1 and...Ch. 7 - For Exercises 37-38, use De Moivre’s theorem to...Ch. 7 - For Exercises 37-38, use De Moivre’s theorem to...Ch. 7 - For Exercises 39-40, find the indicated complex...Ch. 7 - For Exercises 39-40, find the indicated complex...Ch. 7 - For Exercises 41-42, find the indicated complex...Ch. 7 - For Exercises 41-42, find the indicated complex...Ch. 7 - Prob. 43RECh. 7 - Prob. 44RECh. 7 - Prob. 45RECh. 7 - Prob. 46RECh. 7 - For Exercises 47-48, refer to vectors v and w in...Ch. 7 - For Exercises 47-48, refer to vectors v and w in...Ch. 7 - For Exercises 49-54, perform the indicated...Ch. 7 - Prob. 50RECh. 7 - Prob. 51RECh. 7 - For Exercises 49-54, perform the indicated...Ch. 7 - Prob. 53RECh. 7 - For Exercises 49-54, perform the indicated...Ch. 7 - Prob. 55RECh. 7 - Prob. 56RECh. 7 - Prob. 57RECh. 7 - Prob. 58RECh. 7 - Prob. 59RECh. 7 - Prob. 60RECh. 7 - For Exercises 61-62, the given forces (in units of...Ch. 7 - For Exercises 61-62, the given forces (in units of...Ch. 7 - Prob. 63RECh. 7 - During a penalty kick, a soccer ball is kicked at...Ch. 7 - A small plane travels 120mph on a bearing of N40E...Ch. 7 - Prob. 66RECh. 7 - For Exercises 66-68, find the indicated value. a...Ch. 7 - For Exercises 66-68, find the indicated value. a....Ch. 7 - For Exercises 69-72 use the dot product to...Ch. 7 - Prob. 70RECh. 7 - Prob. 71RECh. 7 - Prob. 72RECh. 7 - Given v=i+3j and w=2ij a. Find projwv . b. Find...Ch. 7 - Given v=10j and w=9i+12j a. Find projwv . b. Find...Ch. 7 - A van weighing 2200lb is parked on a street with...Ch. 7 - Prob. 76RECh. 7 - Prob. 77RECh. 7 - Prob. 78RECh. 7 - Prob. 79RECh. 7 - Prob. 80RECh. 7 - Convert 5,54 in polar coordinates to rectangular...Ch. 7 - Convert 63,6 in rectangular coordinates to polar...Ch. 7 - Prob. 3TCh. 7 - For Exercises 3-4, write an equivalent equation...Ch. 7 - For Exercises 5-6, write an equivalent equation...Ch. 7 - For Exercises 5-6, write an equivalent equation...Ch. 7 - For Exercises 7-10, graph the polar equation and...Ch. 7 - For Exercises 7-10, graph the polar equation and...Ch. 7 - For Exercises 7-10, graph the polar equation and...Ch. 7 - For Exercises 7-10, graph the polar equation and...Ch. 7 - For Exercises 11-12, determine whether the tests...Ch. 7 - For Exercises 11-12, determine whether the tests...Ch. 7 - Find the modulus of 55i and write the number in...Ch. 7 - Convert 24cos43+isin43 from polar form to...Ch. 7 - Find 12cos143+isin1438cos220+isin220 and write the...Ch. 7 - Find 18cos100+isin10016cos55+isin55 and write the...Ch. 7 - Prob. 17TCh. 7 - Find the cube roots of 8cos56+isin56 .Ch. 7 - For Exercises 19-24, perform the indicated...Ch. 7 - For Exercises 19-24, perform the indicated...Ch. 7 - For Exercises 19-24, perform the indicated...Ch. 7 - For Exercises 19-24, perform the indicated...Ch. 7 - For Exercises 19-24, perform the indicated...Ch. 7 - For Exercises 19-24, perform the indicated...Ch. 7 - Given v=3,10 , a. Find v2 . b. Find vv . c. How...Ch. 7 - Find a unit vector in the direction of v=8i+6j .Ch. 7 - Prob. 27TCh. 7 - Find the magnitude and direction angle 0360 for...Ch. 7 - Prob. 29TCh. 7 - Prob. 30TCh. 7 - The forces F1=6ij,F2=7i2j and F3=9i+3j act on an...Ch. 7 - Given v=7,5 and w=10,12 , Find projwv .Ch. 7 - A plane heading S21E with an an air speed of...Ch. 7 - Prob. 34TCh. 7 - Prob. 35TCh. 7 - Prob. 36TCh. 7 - Find the amount of work done if an object is...Ch. 7 - For Exercises 1-7, solve for y. Write solutions to...Ch. 7 - For Exercises 1-7, solve for y. Write solutions to...Ch. 7 - For Exercises 1-7, solve for y. Write solutions to...Ch. 7 - For Exercises 1-7, solve for y. Write solutions to...Ch. 7 - For Exercises 1-7, solve for y. Write solutions to...Ch. 7 - For Exercises 1-7, solve for y. Write solutions to...Ch. 7 - For Exercises 1-7, solve for y. Write solutions to...Ch. 7 - Prob. 8CRECh. 7 - Prob. 9CRECh. 7 - Write an equation of a line in slope-intercept...Ch. 7 - Write an equation of a line in polar coordinates...Ch. 7 - For Exercises 12-14, solve each triangle. Round to...Ch. 7 - For Exercises 12-14, solve each triangle. Round to...Ch. 7 - For Exercises 12-14, solve each triangle. Round to...Ch. 7 - Evaluate the difference quotient fx+hf(x)h for...Ch. 7 - Give the domain and range of fx=3x .Ch. 7 - Find the period and phase shift of each function....Ch. 7 - The height h (in feet) of a swing above ground...Ch. 7 - Given v=8,3 and w=12,4 , find vector projection of...Ch. 7 - Prob. 20CRE

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