Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
8th Edition
ISBN: 9781305652224
Author: Charles P. McKeague, Mark D. Turner
Publisher: Cengage Learning
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Chapter 7.3, Problem 46PS
To determine

To calculate:

The quadratic equation by using the law of cosines.

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Chapter 7.3, Problem 45PS
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Solve Triangle ABC if given a=18.23, b=7.5 and c=19.5.
A1) Use the Law of Cosines to solve the triangle. Round your answers to two decimal places. a=10 b=16 c=24 A2)Use the Law of Cosines to solve the triangle. Round your answers to two decimal places.  A=30 b=15 c=30 A3)Use the Law of Cosines to solve the triangle. Round your answers to two decimal places. a = 13,  b = 15,  c = 25 A4) Use the Law of Cosines to solve the triangle. Round your answers to two decimal places. A = 100°,  b = 9,  c = 11
Two ships leave a port at the same time, the first on a bearing of 65º, the second on a bearing of 155º. After one hour, the first boat traveled 20 nautical miles while the second boat traveled 25 nautical miles. How far apart are the two ships? Round your answer to the nearest tenth.

Chapter 7 Solutions

Trigonometry (MindTap Course List)

Ch. 7.1 - For Questions 1 through 4, fill in the blank with...Ch. 7.1 - For Questions 1 through 4, fill in the blank with...Ch. 7.1 - For Questions 1 through 4, fill in the blank with...Ch. 7.1 - Prob. 4PSCh. 7.1 - Each problem that follows refers to triangle ABC....Ch. 7.1 - Prob. 6PSCh. 7.1 - Prob. 7PSCh. 7.1 - Prob. 8PSCh. 7.1 - Prob. 9PSCh. 7.1 - Each problem that follows refers to triangle ABC....
Ch. 7.1 - Each problem that follows refers to triangle ABC....Ch. 7.1 - Each problem that follows refers to triangle ABC....Ch. 7.1 - Prob. 13PSCh. 7.1 - Each problem that follows refers to triangle ABC....Ch. 7.1 - The following information refers to triangle ABC....Ch. 7.1 - The following information refers to triangle ABC....Ch. 7.1 - The following information refers to triangle ABC....Ch. 7.1 - The following information refers to triangle ABC....Ch. 7.1 - Prob. 19PSCh. 7.1 - The following information refers to triangle ABC....Ch. 7.1 - Prob. 21PSCh. 7.1 - The following information refers to triangle ABC....Ch. 7.1 - Prob. 23PSCh. 7.1 - Prob. 24PSCh. 7.1 - Geometry The circle in Figure 12 has a radius of...Ch. 7.1 - Prob. 26PSCh. 7.1 - Prob. 27PSCh. 7.1 - Prob. 28PSCh. 7.1 - Angle of Elevation A man standing near a radio...Ch. 7.1 - Angle of Elevation A person standing on the street...Ch. 7.1 - Angle of Depression A man is flying in a hot-air...Ch. 7.1 - Angle of Elevation From a point on the ground, a...Ch. 7.1 - Angle of Elevation A woman entering an outside...Ch. 7.1 - Angle of Elevation A 155-foot antenna is on top of...Ch. 7.1 - Height of a Tree Figure 16 is a diagram that shows...Ch. 7.1 - Prob. 36PSCh. 7.1 - Distance to a Ship A ship is anchored off a long...Ch. 7.1 - Prob. 38PSCh. 7.1 - Force A tightrope walker is standing still with...Ch. 7.1 - Force A tightrope walker weighing 145 pounds is...Ch. 7.1 - Force If you have ever ridden on a chair lift at a...Ch. 7.1 - Prob. 42PSCh. 7.1 - Prob. 43PSCh. 7.1 - Prob. 44PSCh. 7.1 - Prob. 45PSCh. 7.1 - Solve each equation for if 0360. If rounding is...Ch. 7.1 - Prob. 47PSCh. 7.1 - Prob. 48PSCh. 7.1 - Prob. 49PSCh. 7.1 - Prob. 50PSCh. 7.1 - Find c for triangle ABC if A=43,B=12, and b=25...Ch. 7.1 - Gina is standing near a building and notices that...Ch. 7.1 - A 45.0 lb signal light is hanging from a wire...Ch. 7.2 - For Questions 1 through 8, fill in the blank with...Ch. 7.2 - For Questions 1 through 8, fill in the blank with...Ch. 7.2 - For Questions 1 through 8, fill in the blank with...Ch. 7.2 - Prob. 4PSCh. 7.2 - For Questions 1 through 8, fill in the blank with...Ch. 7.2 - Prob. 6PSCh. 7.2 - Prob. 7PSCh. 7.2 - Prob. 8PSCh. 7.2 - Prob. 9PSCh. 7.2 - Prob. 10PSCh. 7.2 - Each of the following problems refers to triangle...Ch. 7.2 - Each of the following problems refers to triangle...Ch. 7.2 - Each of the following problems refers to triangle...Ch. 7.2 - Prob. 14PSCh. 7.2 - Prob. 15PSCh. 7.2 - Each of the following problems refers to triangle...Ch. 7.2 - Each of the following problems refers to triangle...Ch. 7.2 - Prob. 18PSCh. 7.2 - Solve each of the following triangles....Ch. 7.2 - Solve each of the following triangles....Ch. 7.2 - Prob. 21PSCh. 7.2 - Prob. 22PSCh. 7.2 - Prob. 23PSCh. 7.2 - Prob. 24PSCh. 7.2 - Solve each of the following triangles....Ch. 7.2 - Solve each of the following triangles....Ch. 7.2 - Prob. 27PSCh. 7.2 - Prob. 28PSCh. 7.2 - Geometry The diagonals of a parallelogram are 14...Ch. 7.2 - Geometry The diagonals of a parallelogram are 56...Ch. 7.2 - Distance Between To Planes Two planes leave an...Ch. 7.2 - Distance Between Two Ships Two ships leave a...Ch. 7.2 - Draw vectors representing the course of a ship...Ch. 7.2 - Draw vectors representing the course of a ship...Ch. 7.2 - Draw vectors representing the course of a ship...Ch. 7.2 - Prob. 36PSCh. 7.2 - For Problems 37 through 42, use your knowledge of...Ch. 7.2 - Prob. 38PSCh. 7.2 - Prob. 39PSCh. 7.2 - For Problems 37 through 42, use your knowledge of...Ch. 7.2 - For Problems 37 through 42, use your knowledge of...Ch. 7.2 - For Problems 37 through 42, use your knowledge of...Ch. 7.2 - Resultant Force A heavy log is dragged across the...Ch. 7.2 - Resultant Force Two trucks are trying to pull an...Ch. 7.2 - Prob. 45PSCh. 7.2 - Problems 45 and 46 refer to Figure 10, which is a...Ch. 7.2 - Problems 47 and 48 refer to Figure 11, which shows...Ch. 7.2 - Prob. 48PSCh. 7.2 - Prob. 49PSCh. 7.2 - Prob. 50PSCh. 7.2 - Surveying In performing a geodetic survey, the...Ch. 7.2 - Prob. 52PSCh. 7.2 - Prob. 53PSCh. 7.2 - Prob. 54PSCh. 7.2 - Prob. 55PSCh. 7.2 - Prob. 56PSCh. 7.2 - Prob. 57PSCh. 7.2 - Prob. 58PSCh. 7.2 - Prob. 59PSCh. 7.2 - Prob. 60PSCh. 7.2 - Prob. 61PSCh. 7.2 - Prob. 62PSCh. 7.2 - Prob. 63PSCh. 7.2 - Prob. 64PSCh. 7.2 - Prob. 65PSCh. 7.2 - Prob. 66PSCh. 7.3 - For Questions 1 through 4, fill in the blank with...Ch. 7.3 - Prob. 2PSCh. 7.3 - For Questions 1 through 4, fill in the blank with...Ch. 7.3 - Prob. 4PSCh. 7.3 - Prob. 5PSCh. 7.3 - Prob. 6PSCh. 7.3 - Prob. 7PSCh. 7.3 - Prob. 8PSCh. 7.3 - Prob. 9PSCh. 7.3 - Prob. 10PSCh. 7.3 - Prob. 11PSCh. 7.3 - Prob. 12PSCh. 7.3 - Prob. 13PSCh. 7.3 - Prob. 14PSCh. 7.3 - Find all solutions to each of the following...Ch. 7.3 - Prob. 16PSCh. 7.3 - Prob. 17PSCh. 7.3 - Prob. 18PSCh. 7.3 - Find all solutions to each of the following...Ch. 7.3 - Prob. 20PSCh. 7.3 - Prob. 21PSCh. 7.3 - Prob. 22PSCh. 7.3 - Prob. 23PSCh. 7.3 - Prob. 24PSCh. 7.3 - Distance A 51-foot wire running from the top of a...Ch. 7.3 - Distance A hot-air balloon is held at a constant...Ch. 7.3 - Current A ship is headed due north at a constant...Ch. 7.3 - Prob. 28PSCh. 7.3 - Ground Speed A ship headed due east is moving...Ch. 7.3 - True Course A plane headed due east is traveling...Ch. 7.3 - Leaning Windmill After a wind storm, a farmer...Ch. 7.3 - Distance A boy is riding his motorcycle on a road...Ch. 7.3 - Prob. 33PSCh. 7.3 - Prob. 34PSCh. 7.3 - Find all solutions in the interval 0360. If...Ch. 7.3 - Find all solutions in the interval 0360. If...Ch. 7.3 - Prob. 37PSCh. 7.3 - Prob. 38PSCh. 7.3 - Prob. 39PSCh. 7.3 - Prob. 40PSCh. 7.3 - Prob. 41PSCh. 7.3 - Prob. 42PSCh. 7.3 - Prob. 43PSCh. 7.3 - Prob. 44PSCh. 7.3 - Prob. 45PSCh. 7.3 - Prob. 46PSCh. 7.3 - Prob. 47PSCh. 7.4 - For Questions 1 through 4, fill in the blank with...Ch. 7.4 - Prob. 2PSCh. 7.4 - Prob. 3PSCh. 7.4 - Prob. 4PSCh. 7.4 - Prob. 5PSCh. 7.4 - Prob. 6PSCh. 7.4 - Find the semi perimeter of triangle ABC....Ch. 7.4 - Prob. 8PSCh. 7.4 - Prob. 9PSCh. 7.4 - Prob. 10PSCh. 7.4 - Prob. 11PSCh. 7.4 - Prob. 12PSCh. 7.4 - Prob. 13PSCh. 7.4 - Prob. 14PSCh. 7.4 - Prob. 15PSCh. 7.4 - Prob. 16PSCh. 7.4 - Prob. 17PSCh. 7.4 - Prob. 18PSCh. 7.4 - Prob. 19PSCh. 7.4 - Prob. 20PSCh. 7.4 - Prob. 21PSCh. 7.4 - Prob. 22PSCh. 7.4 - Prob. 23PSCh. 7.4 - Prob. 24PSCh. 7.4 - Prob. 25PSCh. 7.4 - Prob. 26PSCh. 7.4 - Prob. 27PSCh. 7.4 - Prob. 28PSCh. 7.4 - Geometry and Area Find the area of a parallelogram...Ch. 7.4 - Geometry and Area Find the area of a parallelogram...Ch. 7.4 - Prob. 31PSCh. 7.4 - Ceomctry and Area The area of a triangle is 80...Ch. 7.4 - Prob. 33PSCh. 7.4 - Prob. 34PSCh. 7.4 - Prob. 35PSCh. 7.4 - Prob. 36PSCh. 7.4 - Prob. 37PSCh. 7.4 - Prob. 38PSCh. 7.4 - Prob. 39PSCh. 7.4 - Prob. 40PSCh. 7.4 - Prob. 41PSCh. 7.4 - Prob. 42PSCh. 7.4 - Prob. 43PSCh. 7.4 - Prob. 44PSCh. 7.4 - Prob. 45PSCh. 7.5 - For Questions 1 through 10, fill in the blank with...Ch. 7.5 - Prob. 2PSCh. 7.5 - For Questions 1 through 10, fill in the blank with...Ch. 7.5 - Prob. 4PSCh. 7.5 - Prob. 5PSCh. 7.5 - Prob. 6PSCh. 7.5 - Prob. 7PSCh. 7.5 - Prob. 8PSCh. 7.5 - Prob. 9PSCh. 7.5 - Prob. 10PSCh. 7.5 - Prob. 11PSCh. 7.5 - Prob. 12PSCh. 7.5 - Prob. 13PSCh. 7.5 - Prob. 14PSCh. 7.5 - Prob. 15PSCh. 7.5 - Prob. 16PSCh. 7.5 - Prob. 17PSCh. 7.5 - Prob. 18PSCh. 7.5 - Prob. 19PSCh. 7.5 - Prob. 20PSCh. 7.5 - Prob. 21PSCh. 7.5 - Prob. 22PSCh. 7.5 - Prob. 23PSCh. 7.5 - Prob. 24PSCh. 7.5 - Prob. 25PSCh. 7.5 - Prob. 26PSCh. 7.5 - Prob. 27PSCh. 7.5 - Prob. 28PSCh. 7.5 - Prob. 29PSCh. 7.5 - Prob. 30PSCh. 7.5 - Prob. 31PSCh. 7.5 - Prob. 32PSCh. 7.5 - Prob. 33PSCh. 7.5 - Prob. 34PSCh. 7.5 - For each vector, find 12V,V, and 4V. V= 3,7Ch. 7.5 - Prob. 36PSCh. 7.5 - Prob. 37PSCh. 7.5 - Prob. 38PSCh. 7.5 - Prob. 39PSCh. 7.5 - Prob. 40PSCh. 7.5 - Prob. 41PSCh. 7.5 - Prob. 42PSCh. 7.5 - Prob. 43PSCh. 7.5 - Prob. 44PSCh. 7.5 - Prob. 45PSCh. 7.5 - Prob. 46PSCh. 7.5 - Prob. 47PSCh. 7.5 - Prob. 48PSCh. 7.5 - Prob. 49PSCh. 7.5 - Prob. 50PSCh. 7.5 - Prob. 51PSCh. 7.5 - Prob. 52PSCh. 7.5 - Prob. 53PSCh. 7.5 - Prob. 54PSCh. 7.5 - Prob. 55PSCh. 7.5 - Prob. 56PSCh. 7.5 - Prob. 57PSCh. 7.5 - Prob. 58PSCh. 7.5 - Prob. 59PSCh. 7.5 - Prob. 60PSCh. 7.5 - Approximate the magnitude of each vector and the...Ch. 7.5 - Prob. 62PSCh. 7.5 - Prob. 63PSCh. 7.5 - Prob. 64PSCh. 7.5 - Prob. 65PSCh. 7.5 - Prob. 66PSCh. 7.5 - Force An 8.0-pound weight is lying on a situp...Ch. 7.5 - Prob. 68PSCh. 7.5 - Force Tyler and his cousin Kelly have attached a...Ch. 7.5 - Prob. 70PSCh. 7.5 - Force A traffic light weighing 22 pounds is...Ch. 7.5 - Force A tightrope walker is standing still with...Ch. 7.5 - Prob. 73PSCh. 7.5 - Prob. 74PSCh. 7.5 - Prob. 75PSCh. 7.5 - Prob. 76PSCh. 7.6 - Prob. 1PSCh. 7.6 - Prob. 2PSCh. 7.6 - Prob. 3PSCh. 7.6 - Prob. 4PSCh. 7.6 - Prob. 5PSCh. 7.6 - Prob. 6PSCh. 7.6 - Prob. 7PSCh. 7.6 - Prob. 8PSCh. 7.6 - Prob. 9PSCh. 7.6 - Prob. 10PSCh. 7.6 - Prob. 11PSCh. 7.6 - Prob. 12PSCh. 7.6 - Prob. 13PSCh. 7.6 - Prob. 14PSCh. 7.6 - Prob. 15PSCh. 7.6 - Prob. 16PSCh. 7.6 - Prob. 17PSCh. 7.6 - Prob. 18PSCh. 7.6 - Prob. 19PSCh. 7.6 - Prob. 20PSCh. 7.6 - Prob. 21PSCh. 7.6 - Prob. 22PSCh. 7.6 - Prob. 23PSCh. 7.6 - Prob. 24PSCh. 7.6 - Prob. 25PSCh. 7.6 - Prob. 26PSCh. 7.6 - Prob. 27PSCh. 7.6 - Prob. 28PSCh. 7.6 - Show that each pair of sectors is perpendicular....Ch. 7.6 - Prob. 30PSCh. 7.6 - Prob. 31PSCh. 7.6 - Show that each pair of sectors is perpendicular....Ch. 7.6 - Prob. 33PSCh. 7.6 - Prob. 34PSCh. 7.6 - Prob. 35PSCh. 7.6 - In general, show that the vectors V=ai+bj and...Ch. 7.6 - Prob. 37PSCh. 7.6 - Prob. 38PSCh. 7.6 - Prob. 39PSCh. 7.6 - Find the work performed when the given force F is...Ch. 7.6 - Prob. 41PSCh. 7.6 - Prob. 42PSCh. 7.6 - Prob. 43PSCh. 7.6 - Prob. 44PSCh. 7.6 - Prob. 45PSCh. 7.6 - Prob. 46PSCh. 7.6 - Prob. 47PSCh. 7.6 - Prob. 48PSCh. 7.6 - Prob. 49PSCh. 7.6 - Prob. 50PSCh. 7.6 - Prob. 51PSCh. 7.6 - Prob. 52PSCh. 7.6 - Which pair of vectors are perpendicular? a. 3i+4j...Ch. 7.6 - Prob. 54PSCh. 7 - Problems 1 through 10 refer to triangle ABC, which...Ch. 7 - Prob. 2CTCh. 7 - Prob. 3CTCh. 7 - Prob. 4CTCh. 7 - Prob. 5CTCh. 7 - Prob. 6CTCh. 7 - Prob. 7CTCh. 7 - Prob. 8CTCh. 7 - Prob. 9CTCh. 7 - Problems 1 through 10 refer to triangle ABC, which...Ch. 7 - Prob. 11CTCh. 7 - Prob. 12CTCh. 7 - Prob. 13CTCh. 7 - Prob. 14CTCh. 7 - Angle of Elevation A man standing near a building...Ch. 7 - Geometry The diagonals of a parallelogram are 26.8...Ch. 7 - Arc Length Suppose Figure 1 is an exaggerated...Ch. 7 - Distance and Bearing A man wandering in the desert...Ch. 7 - Distance Two guy wires from the top of a tent pole...Ch. 7 - Ground Speed A plane is headed due east with an...Ch. 7 - Height of a Tree To estimate the height of a tree,...Ch. 7 - True Course and Speed A plane flying with an...Ch. 7 - Prob. 23CTCh. 7 - Prob. 24CTCh. 7 - Prob. 25CTCh. 7 - Prob. 26CTCh. 7 - Prob. 27CTCh. 7 - Prob. 28CTCh. 7 - Find the value of b so that vectors U=5i+12j and...Ch. 7 - Prob. 30CTCh. 7 - Prob. 1GPCh. 7 - Prob. 2GPCh. 7 - Prob. 3GPCh. 7 - Prob. 4GPCh. 7 - Prob. 5GPCh. 7 - We mentioned in Section 7.5 that our algebraic...
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