Find the exact value of each expression: cos 165°

Q: Use the Half-angle Formulas to find the exact value of each expression. cos(- 3π/ 8)

A: Half-angle Formula: 1+cosθ=2cos2θ2.

Q: convert each angle in radians to degrees.     -pi/6

A: Given : The angle is -π6 .

Q: Determine the value of each angle to the nearest degree  Cos B = 0.9823

A: Given, cos B = 0.9823

Q: 7) cos 15°

A: Solution: As per our guidelines, we are supposed to answer only? One question ( if there are…

Q: Use a calculator to find the value of each expression rounded to two decimal places .cos-1(0.44)

A: Given- cos-10.44 To Find- The value of the above inverse trigonometric expression.

Q: convert each angle in radians to degrees.

A: Given the angle in radian is π3

Q: convert each angle in radians to degrees.     pi/2

A:

Q: Find the exact value of each expression.tan 330°

A: Let the given expression be y -y = tan330Let us take 360 as the reference angle here.Then we can…

Q: Simplify each trigonometric expression by following the indicated direction.

A: Given

Q: Use an appropriate Half-Angle Formula to find the exact value of the expression. cos 8

A: Explained below

Q: Find the exact value of each expression.

A: To find the exact value of expression

Q: Simplify each expression by substituting values from the table of exact values and thensimplifying…

A: We have to find the value of the expression: sin45ο+cos45ο2 We know the exact values from table:…

Q: Find the exact value of each expression: a) cos(pi/3+pi/4) b) cos(pi/3)+cos(pi/4)

A:

Q: Find the exact value of the following expression. - 1 cos (-1/2) In which quadrant is this angle?

A: We know that,

Q: find the exact value of each expression.

A: The given expression is csccos-1-32.We know that cos-1-32= 5π6.and csc5π6 = 1sin5π6 = 112= 2.

Q: Find the exact value of each expression. tan 105°

A:

Q: Use sum,difference,product,or half-angle formulas to find the exact value of each expression. cos…

A: As value of cosθ and sinθ revolves around +1 to -1 , they take different values depending on the…

Q: Find the exact value of each expression .

A: Explanation Given that,  tan-13

Q: Find the value of each trigonometric ratio. Cos X 24 18 30

A:

Q: Find the exact value of each expression.

A: To find the exact value of sin-π4. Solution: We know that, sin-x=-sinx Therefore,…

Q: Complete each Trigonometric Ratio* Adjacent/Hypotenuse Opposite/Adjacent Opposite/Hypotenuse Sin (A)…

A:

Q: Find the exact value of each expression.

A: To find the exact value of cotsin-1-12. Solution: We know that  sin-1-x=-sinx and cot-x=-cotx…

Q: convert each angle in radians to degrees.     pi/3

A: An angle in radian is given as π3

Q: Match each inverse trigonemetric expression to its angle value. sin- 45 V3 COS- 60° tan- 90° sin¬(1)…

A:

Q: Find the exact value of each expression; cos( - 120°)

A:

Q: Convert the angle 18° in degrees to radians.Round to two decimal places.

A:

Q: convert each angle in degrees to radians. Express your answer as a multiple of pi; 30°

A: It is known that, 1°=π180 rad The given angle in degrees is, 30°. The objective is to convert the…

Q: Find the exact value of each expression

A: We expression cos[2tan-1(-43)] Let  y = cos2tan-1(-43) To find the value of this expression Let…

Q: Find the exact value of each expression.

A:

Q: Find the exact value of each expression.

A: The given expression is arccos-1 Obtain the valve of arccos-1 by using Ti-83 calculator in degree…

Q: Find the exact value of each expression. cos 7π/12

A: Consider cos 7π12= cos 3π+4π12 =cos 3π12+4π12= cos π4+π3

Q: Convert the angle 90° to radians. Give the exact value and use pi for T.

A: We have to convert the 90° to radians We know that ,  1° = π/180 radian So ,

Q: Find the value of each trigonometric ratio. tan C 50 40 B 30

A: Given,           A right triangle ABC is shown below :

Q: Simplify each expression by substituting values from the table of exact values and thensimplifying…

A:

Q: 6) sin A

A:

Q: Simplify each expression by first substituting values from the table of exact values and…

A:

Q: FIND THE EXACT VALUES OF EACH EXPRESSION sin (-4pi / 3)

A: the given expression is: sin-4π3 we have to find the exact value of the given expression.

Q: Find the value of each trigonometric ratio. cos X 25 20 15

A:

Q: Use the Half-Angle Identities to find each exact value. 5. cos 112.5°

A: We are given cos 112.5 and we have to find its exact value. The solution is given below:

Q: Use an appropriate Half-Angle Formula to find the exact value of the expression. cos (2)

A:

Q: Label each trig ratio correctly. adjacent leg opposite leg opposite leg÷ hypotenuse hypotenuse…

A:

Q: Simplify each expression by first substituting values from the table of exact values and…

A:

Q: Find the exact value of each expression. (a) cos(120° + 45°)

A: Disclaimer: "Since you have asked multiple questions, we will solve the first question for you.  If…

Q: Find the value of each trigonometric ratio to the nearest ten-thousandth. 7) cos X 39 15 36

A:

Q: Find the value of each trigonometric ratio. 1) tan C

A: Question 1,Given,          The triangle is shown below :

Q: Find each angle measure to the nearest degree. sin X= 1/2

A: We have to measure angle to the nearest degree.

Q: Convert the angle 225° to radians. Give the exact value and use pi for T.

A:

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.