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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Concept explainers

Ratios
A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.
Trigonometric Ratios
Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.
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Chapter 2.1, Problem 76PS
To determine

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The angle, 45° in standard position and name a point on the terminal side.

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Chapter 2.1, Problem 75PS
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Chapter 2 Solutions

Trigonometry (MindTap Course List)

Ch. 2.1 - For Questions 1 through 3, fill in each blank with...Ch. 2.1 - For Questions 1 through 3, fill in each blank with...Ch. 2.1 - For Questions 1 through 3, fill in each blank with...Ch. 2.1 - Match each trigonometric function with its...Ch. 2.1 - Prob. 5PSCh. 2.1 - Prob. 6PSCh. 2.1 - Prob. 7PSCh. 2.1 - Prob. 8PSCh. 2.1 - Prob. 9PSCh. 2.1 - Prob. 10PS
Ch. 2.1 - In each of the following right triangles, find sin...Ch. 2.1 - Prob. 12PSCh. 2.1 - Prob. 13PSCh. 2.1 - In each of the following right triangles, find sin...Ch. 2.1 - Prob. 15PSCh. 2.1 - Prob. 16PSCh. 2.1 - In each of the following right triangles, find sin...Ch. 2.1 - Prob. 18PSCh. 2.1 - Prob. 19PSCh. 2.1 - In each of the following diagrams, angle A is in...Ch. 2.1 - Use Definition II to explain why, for any acute...Ch. 2.1 - Prob. 22PSCh. 2.1 - Use Definition II to explain why it is possible to...Ch. 2.1 - Use Definition II to explain why it is possible to...Ch. 2.1 - Prob. 25PSCh. 2.1 - Use the Cofunction Theorem to fill in the blanks...Ch. 2.1 - Use the Cofunction Theorem to fill in the blanks...Ch. 2.1 - Prob. 28PSCh. 2.1 - Prob. 29PSCh. 2.1 - Use the Cofunction Theorem to fill in the blanks...Ch. 2.1 - Use the Cofunction Theorem to fill in the blanks...Ch. 2.1 - Use the Cofunction Theorem to fill in the blanks...Ch. 2.1 - Prob. 33PSCh. 2.1 - Complete the following tables using exact values.Ch. 2.1 - Simplify each expression by first substituting...Ch. 2.1 - Simplify each expression by first substituting...Ch. 2.1 - Simplify each expression by first substituting...Ch. 2.1 - Simplify each expression by first substituting...Ch. 2.1 - Simplify each expression by first substituting...Ch. 2.1 - Prob. 40PSCh. 2.1 - Simplify each expression by first substituting...Ch. 2.1 - Prob. 42PSCh. 2.1 - Prob. 43PSCh. 2.1 - Simplify each expression by first substituting...Ch. 2.1 - Prob. 45PSCh. 2.1 - Prob. 46PSCh. 2.1 - For each expression that follows, replace x with...Ch. 2.1 - For each expression that follows, replace x with...Ch. 2.1 - For each expression that follows, replace x with...Ch. 2.1 - Prob. 50PSCh. 2.1 - For each expression that follows, replace x with...Ch. 2.1 - Prob. 52PSCh. 2.1 - Prob. 53PSCh. 2.1 - Prob. 54PSCh. 2.1 - Prob. 55PSCh. 2.1 - Prob. 56PSCh. 2.1 - Prob. 57PSCh. 2.1 - Prob. 58PSCh. 2.1 - Prob. 59PSCh. 2.1 - Prob. 60PSCh. 2.1 - Prob. 61PSCh. 2.1 - Prob. 62PSCh. 2.1 - Prob. 63PSCh. 2.1 - Find exact values for each of the following, if...Ch. 2.1 - Prob. 65PSCh. 2.1 - Prob. 66PSCh. 2.1 - Prob. 67PSCh. 2.1 - Problems 65 through 68 refer to right triangle ABC...Ch. 2.1 - Prob. 69PSCh. 2.1 - Prob. 70PSCh. 2.1 - Geometry: Characteristics of a Cube The object...Ch. 2.1 - Prob. 72PSCh. 2.1 - Prob. 73PSCh. 2.1 - Prob. 74PSCh. 2.1 - Prob. 75PSCh. 2.1 - Prob. 76PSCh. 2.1 - Prob. 77PSCh. 2.1 - Prob. 78PSCh. 2.1 - Triangle ABC is a right triangle with C=90. If a =...Ch. 2.1 - According to the Cofunction Theorem, which value...Ch. 2.1 - Prob. 81PSCh. 2.1 - Prob. 82PSCh. 2.2 - Prob. 1PSCh. 2.2 - For Questions 1 through 4, fill in each blank with...Ch. 2.2 - Prob. 3PSCh. 2.2 - Prob. 4PSCh. 2.2 - Prob. 5PSCh. 2.2 - Prob. 6PSCh. 2.2 - Prob. 7PSCh. 2.2 - Prob. 8PSCh. 2.2 - Prob. 9PSCh. 2.2 - Prob. 10PSCh. 2.2 - Prob. 11PSCh. 2.2 - Add or subtract as indicated. 90(6225)Ch. 2.2 - Prob. 13PSCh. 2.2 - Prob. 14PSCh. 2.2 - Prob. 15PSCh. 2.2 - Prob. 16PSCh. 2.2 - Convert each of the following to degrees and...Ch. 2.2 - Convert each of the following to degrees and...Ch. 2.2 - Prob. 19PSCh. 2.2 - Convert each of the following to degrees and...Ch. 2.2 - Prob. 21PSCh. 2.2 - Prob. 22PSCh. 2.2 - Prob. 23PSCh. 2.2 - Prob. 24PSCh. 2.2 - Change each of the following to decimal degrees....Ch. 2.2 - Prob. 26PSCh. 2.2 - Prob. 27PSCh. 2.2 - Change each of the following to decimal degrees....Ch. 2.2 - Prob. 29PSCh. 2.2 - Change each of the following to decimal degrees....Ch. 2.2 - Prob. 31PSCh. 2.2 - Prob. 32PSCh. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Prob. 35PSCh. 2.2 - Prob. 36PSCh. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Prob. 40PSCh. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Prob. 47PSCh. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Prob. 49PSCh. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Use a calculator to find each of the following....Ch. 2.2 - Prob. 52PSCh. 2.2 - Prob. 53PSCh. 2.2 - Use a calculator to complete the following table....Ch. 2.2 - Find if is between 0 and 90. Round your answers...Ch. 2.2 - Find if is between 0 and 90. Round your answers...Ch. 2.2 - Find if is between 0 and 90. Round your answers...Ch. 2.2 - Find if is between 0 and 90. Round your answers...Ch. 2.2 - Prob. 59PSCh. 2.2 - Find if is between 0 and 90. Round your answers...Ch. 2.2 - Find if is between 0 and 90. Round your answers...Ch. 2.2 - Find if is between 0 and 90. Round your answers...Ch. 2.2 - Find if is between 0 and 90. Round your answers...Ch. 2.2 - Find if is between 0 and 90. Round your answers...Ch. 2.2 - Prob. 65PSCh. 2.2 - Find if is between 0 and 90. Round your answers...Ch. 2.2 - Use a calculator to find a value of between 0 and...Ch. 2.2 - Use a calculator to find a value of between 0 and...Ch. 2.2 - Use a calculator to find a value of between 0 and...Ch. 2.2 - Prob. 70PSCh. 2.2 - Prob. 71PSCh. 2.2 - Prob. 72PSCh. 2.2 - To further justify the Cofunction. Theorem use...Ch. 2.2 - Prob. 74PSCh. 2.2 - To further justify the Cofunction. Theorem, use...Ch. 2.2 - To further justify the Cofunction. Theorem, use...Ch. 2.2 - Prob. 77PSCh. 2.2 - Prob. 78PSCh. 2.2 - Prob. 79PSCh. 2.2 - Prob. 80PSCh. 2.2 - What happens when you try to find A for sin A =...Ch. 2.2 - What happens when you try to find B for sin B =...Ch. 2.2 - What happens when you try to find tan 90 on your...Ch. 2.2 - What happens when you try to find cot 0 on your...Ch. 2.2 - Prob. 85PSCh. 2.2 - Prob. 86PSCh. 2.2 - Prob. 87PSCh. 2.2 - Sundials The Moorish sundial is designed so that...Ch. 2.2 - Prob. 89PSCh. 2.2 - Prob. 90PSCh. 2.2 - Prob. 91PSCh. 2.2 - Find sin,cos, and tan for each value of . (Do not...Ch. 2.2 - Find the remaining trigonometric functions of ...Ch. 2.2 - Find the remaining trigonometric functions of ...Ch. 2.2 - Prob. 95PSCh. 2.2 - Prob. 96PSCh. 2.2 - Prob. 97PSCh. 2.2 - Prob. 98PSCh. 2.2 - Prob. 99PSCh. 2.2 - Given cot=x for some value x. Which of the...Ch. 2.3 - For Questions 1 through 4, fill in each blank with...Ch. 2.3 - For Questions 1 through 4, fill in each blank with...Ch. 2.3 - For Questions 1 through 4, fill in each blank with...Ch. 2.3 - Prob. 4PSCh. 2.3 - Prob. 5PSCh. 2.3 - For Problems 5 through 8, determine the number of...Ch. 2.3 - Prob. 7PSCh. 2.3 - Prob. 8PSCh. 2.3 - Problems 9 through 22 refer to right triangle ABC...Ch. 2.3 - Prob. 10PSCh. 2.3 - Prob. 11PSCh. 2.3 - Problems 9 through 22 refer to right triangle ABC...Ch. 2.3 - Prob. 13PSCh. 2.3 - Problems 9 through 22 refer to right triangle ABC...Ch. 2.3 - Problems 9 through 22 refer to right triangle ABC...Ch. 2.3 - Prob. 16PSCh. 2.3 - Prob. 17PSCh. 2.3 - Problems 9 through 22 refer to right triangle ABC...Ch. 2.3 - Prob. 19PSCh. 2.3 - Prob. 20PSCh. 2.3 - Problems 9 through 22 refer to right triangle ABC...Ch. 2.3 - Prob. 22PSCh. 2.3 - Problems 23 through 38 refer to right triangle ABC...Ch. 2.3 - Problems 23 through 38 refer to right triangle ABC...Ch. 2.3 - Prob. 25PSCh. 2.3 - Prob. 26PSCh. 2.3 - Problems 23 through 38 refer to right triangle ABC...Ch. 2.3 - Prob. 28PSCh. 2.3 - Problems 23 through 38 refer to right triangle ABC...Ch. 2.3 - Problems 23 through 38 refer to right triangle ABC...Ch. 2.3 - Problems 23 through 38 refer to right triangle ABC...Ch. 2.3 - Problems 23 through 38 refer to right triangle ABC...Ch. 2.3 - Prob. 33PSCh. 2.3 - Prob. 34PSCh. 2.3 - Problems 23 through 38 refer to right triangle ABC...Ch. 2.3 - Problems 23 through 38 refer to right triangle ABC...Ch. 2.3 - Problems 23 through 38 refer to right triangle ABC...Ch. 2.3 - Problems 23 through 38 refer to right triangle ABC...Ch. 2.3 - In Problems 39 and 40, use the information given...Ch. 2.3 - In Problems 39 and 40, use the information given...Ch. 2.3 - Prob. 41PSCh. 2.3 - Prob. 42PSCh. 2.3 - Prob. 43PSCh. 2.3 - Prob. 44PSCh. 2.3 - Prob. 45PSCh. 2.3 - Figure 8 shows two right triangles drawn at 900 to...Ch. 2.3 - Figure 8 shows two right triangles drawn at 900 to...Ch. 2.3 - Figure 8 shows two right triangles drawn at 900 to...Ch. 2.3 - Prob. 49PSCh. 2.3 - Prob. 50PSCh. 2.3 - Prob. 51PSCh. 2.3 - Prob. 52PSCh. 2.3 - In Figure 9, the distance from A to D is y, the...Ch. 2.3 - In Figure 9, the distance from A to D is y, the...Ch. 2.3 - Suppose each edge of the cube shown in Figure 10...Ch. 2.3 - Suppose each edge of the cube shown in Figure 10...Ch. 2.3 - Suppose each edge of the cube shown in Figure 10...Ch. 2.3 - Soccer A regulation soccer field has a rectangular...Ch. 2.3 - Prob. 59PSCh. 2.3 - Soccer A regulation soccer field has a rectangular...Ch. 2.3 - Prob. 61PSCh. 2.3 - Prob. 62PSCh. 2.3 - Prob. 63PSCh. 2.3 - Prob. 64PSCh. 2.3 - Ferris Wheel In 1897, a Ferris wheel was built in...Ch. 2.3 - Ferris Wheel A Ferris wheel with a diameter of 165...Ch. 2.3 - Observation Wheel the London Eye has a diameter of...Ch. 2.3 - Observation Wheel The High Roller, located on the...Ch. 2.3 - Human Cannonball In Example 2 of Section 1.2, we...Ch. 2.3 - Prob. 70PSCh. 2.3 - Prob. 71PSCh. 2.3 - Prob. 72PSCh. 2.3 - Prob. 73PSCh. 2.3 - Prob. 74PSCh. 2.3 - Find the remaining trigonometric ratios for based...Ch. 2.3 - Find the remaining trigonometric ratios for based...Ch. 2.3 - Find the remaining trigonometric ratios for based...Ch. 2.3 - Find the remaining trigonometric ratios for based...Ch. 2.3 - Prob. 79PSCh. 2.3 - Prob. 80PSCh. 2.3 - Prob. 81PSCh. 2.3 - A Ferris wheel has a radius of 45 feet and the...Ch. 2.4 - For Questions 1 through 4, fill in each blank with...Ch. 2.4 - For Questions 1 through 4, fill in each blank with...Ch. 2.4 - Prob. 3PSCh. 2.4 - Prob. 4PSCh. 2.4 - Prob. 5PSCh. 2.4 - Prob. 6PSCh. 2.4 - Prob. 7PSCh. 2.4 - Prob. 8PSCh. 2.4 - Prob. 9PSCh. 2.4 - Prob. 10PSCh. 2.4 - Prob. 11PSCh. 2.4 - Prob. 12PSCh. 2.4 - Solve each of the following problems. In each...Ch. 2.4 - Solve each of the following problems. In each...Ch. 2.4 - Solve each of the following problems. In each...Ch. 2.4 - Solve each of the following problems. In each...Ch. 2.4 - Solve each of the following problems. In each...Ch. 2.4 - Solve each of the following problems. In each...Ch. 2.4 - Solve each of the following problems. In each...Ch. 2.4 - Prob. 20PSCh. 2.4 - Solve each of the following problems. In each...Ch. 2.4 - Solve each of the following problems. In each...Ch. 2.4 - Solve each of the following problems. In each...Ch. 2.4 - Solve each of the following problems. In each...Ch. 2.4 - Figure 15 shows the topographic map e used in...Ch. 2.4 - Figure 15 shows the topographic map e used in...Ch. 2.4 - Distance and Bearing Problems 27 through 32...Ch. 2.4 - Distance and Bearing Problems 27 through 32...Ch. 2.4 - Distance and Bearing Problems 27 through 32...Ch. 2.4 - Distance and Bearing Problems 27 through 32...Ch. 2.4 - Prob. 31PSCh. 2.4 - Prob. 32PSCh. 2.4 - Height of a Door From a point on the floor the...Ch. 2.4 - Height of Building A man standing on the roof of a...Ch. 2.4 - Height of an Obelisk Two people decide to find the...Ch. 2.4 - Distance In Figure 18, a person standing at point...Ch. 2.4 - Height of a Tree An ecologist wishes to find the...Ch. 2.4 - Rescue A helicopter makes a forced landing at sea....Ch. 2.4 - Height of a Flagpole Two people decide to estimate...Ch. 2.4 - Height of a Tree To estimate the height of a tree,...Ch. 2.4 - Radius of Earth A satellite is circling 112 miles...Ch. 2.4 - Distance Suppose Figure 22 is an exaggerated...Ch. 2.4 - Distance A ship is anchored off a long straight...Ch. 2.4 - Distance Pat and Tim position themselves 2.5 miles...Ch. 2.4 - Spiral of Roots Figure 23 shows the Spiral of...Ch. 2.4 - Spiral of Roots Figure 23 shows the Spiral of...Ch. 2.4 - One of the items we discussed in this section was...Ch. 2.4 - Albert lives in New Orleans. At noon on a summer...Ch. 2.4 - Prob. 49PSCh. 2.4 - Prob. 50PSCh. 2.4 - Prob. 51PSCh. 2.4 - Prob. 52PSCh. 2.4 - Prob. 53PSCh. 2.4 - Show that each of the following statements is true...Ch. 2.4 - Prob. 55PSCh. 2.4 - Prob. 56PSCh. 2.4 - Prob. 57PSCh. 2.4 - If the angle of elevation to the sun is 74.3 when...Ch. 2.4 - A ship is anchored off a long straight shoreline...Ch. 2.4 - To estimate the height of a tree, one person...Ch. 2.5 - Prob. 1PSCh. 2.5 - For Questions 1 through 8, fill in each blank with...Ch. 2.5 - Prob. 3PSCh. 2.5 - Prob. 4PSCh. 2.5 - For Questions 1 through 8, fill in each blank with...Ch. 2.5 - Prob. 6PSCh. 2.5 - Prob. 7PSCh. 2.5 - Prob. 8PSCh. 2.5 - Draw vectors representing the following...Ch. 2.5 - Prob. 10PSCh. 2.5 - Prob. 11PSCh. 2.5 - Prob. 12PSCh. 2.5 - Prob. 13PSCh. 2.5 - Prob. 14PSCh. 2.5 - Prob. 15PSCh. 2.5 - Prob. 16PSCh. 2.5 - Bearing and Distance A person is riding in a hot...Ch. 2.5 - Prob. 18PSCh. 2.5 - Prob. 19PSCh. 2.5 - Prob. 20PSCh. 2.5 - Prob. 21PSCh. 2.5 - Prob. 22PSCh. 2.5 - Prob. 23PSCh. 2.5 - Prob. 24PSCh. 2.5 - Prob. 25PSCh. 2.5 - Prob. 26PSCh. 2.5 - Prob. 27PSCh. 2.5 - For each problem below, the magnitudes of the...Ch. 2.5 - Navigation A ship is 2.8 off course. If the ship...Ch. 2.5 - Navigation If a navigation error puts a plane 1.9...Ch. 2.5 - Prob. 31PSCh. 2.5 - Prob. 32PSCh. 2.5 - Prob. 33PSCh. 2.5 - Prob. 34PSCh. 2.5 - Distance A ship travels 130 kilometers on a...Ch. 2.5 - Prob. 36PSCh. 2.5 - Velocity of an Arrow An arrow is shot into the air...Ch. 2.5 - Velocity of an Arrow the horizontal and vertical...Ch. 2.5 - Distance A plane travels 170 miles on a bearing of...Ch. 2.5 - Distance A ship travels in the direction S 120 E...Ch. 2.5 - Prob. 41PSCh. 2.5 - Prob. 42PSCh. 2.5 - Force An 8.0-pound weight is lying on a sit-up...Ch. 2.5 - Force Repeat Problem 43 for a 25.0-pound weight...Ch. 2.5 - Prob. 45PSCh. 2.5 - Prob. 46PSCh. 2.5 - Prob. 47PSCh. 2.5 - Prob. 48PSCh. 2.5 - Prob. 49PSCh. 2.5 - Prob. 50PSCh. 2.5 - Draw 135 in standard position, locate a convenient...Ch. 2.5 - Prob. 52PSCh. 2.5 - Prob. 53PSCh. 2.5 - Prob. 54PSCh. 2.5 - Prob. 55PSCh. 2.5 - Prob. 56PSCh. 2.5 - Prob. 57PSCh. 2.5 - Prob. 58PSCh. 2.5 - Prob. 59PSCh. 2.5 - Prob. 60PSCh. 2 - Find sin A, cos A, tan A, and sin B, cos B, and...Ch. 2 - Prob. 2CTCh. 2 - Prob. 3CTCh. 2 - Use Definition II to explain why, for any acute...Ch. 2 - Fill in the blank to make the statement true: sin...Ch. 2 - Prob. 6CTCh. 2 - Prob. 7CTCh. 2 - Prob. 8CTCh. 2 - Prob. 9CTCh. 2 - Prob. 10CTCh. 2 - Prob. 11CTCh. 2 - Prob. 12CTCh. 2 - Use a calculator to find the following. Round to...Ch. 2 - Use a calculator to find the following. Round to...Ch. 2 - Use a calculator to find the following. Round to...Ch. 2 - Use a calculator to find to the nearest tenth of...Ch. 2 - Use a calculator to find to the nearest tenth of...Ch. 2 - The following problems refer to right triangle ABC...Ch. 2 - Prob. 19CTCh. 2 - Prob. 20CTCh. 2 - Prob. 21CTCh. 2 - Geometry If the altitude of an isosceles triangle...Ch. 2 - Angle of Elevation If the angle of elevation of...Ch. 2 - Distance Two guy wires from the top of a 35-foot...Ch. 2 - Prob. 25CTCh. 2 - Prob. 26CTCh. 2 - Distance and Bearing A ship travels 120 miles on a...Ch. 2 - Force Tyler and his cousin Kelly have attached a...Ch. 2 - Prob. 29CTCh. 2 - Prob. 30CTCh. 2 - Prob. 1GPCh. 2 - Use your knowledge of a 306090 triangle to find...Ch. 2 - Prob. 3GPCh. 2 - Prob. 4GPCh. 2 - Prob. 5GPCh. 2 - Prob. 6GPCh. 2 - The origins of the sine function are found in the...
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Trigonometric Ratios; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=9-eHMMpQC2k;License: Standard YouTube License, CC-BY