Explanation Given information: ∠ B A C = 90 0 , ∠ A C B = 40 0 , and distance from A to C is 75 feet Formula used: 1) tan t = Opposite Adjacent 2) Converting degree into radians by multiplying to degree by π 180 Calculation: Δ A B C with ∠ B A C = 90 0 , ∠ A C B = 40 0 , and distance from A to C is 75 feet shown in the below figure: First convert 40 0 into radian, ⇒ 40 0 = 40 × π 180 rad = 2 π 9 rad

Calculus & Its Applications (14th Edition)

14th Edition

ISBN: 9780134437774

Author: Larry J. Goldstein, David C. Lay, David I. Schneider, Nakhle H. Asmar

Publisher: PEARSON

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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 8.4, Problem 11E

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To calculate: The width of a river at points A and B, if the ∠ BAC = 900, ∠ ACB = 400 and distance from A to C is 75 feet as shown in the below figure:

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Chapter 8.4, Problem 10E

Chapter 8.4, Problem 12E

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Chapter 8 Solutions

Calculus & Its Applications (14th Edition)

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The width of a river at points A and B , if the ∠ B A C = 90 0 , ∠ A C B = 40 0 and distance from A to C is 75 feet as shown in the below figure:

Solution Summary: The author calculates the width of a river at points ATextB and C by multiplying to degree by pi 180

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To calculate: The width of a river at points A and B, if the ∠ BAC = 900, ∠ ACB = 400 and distance from A to C is 75 feet as shown in the below figure:

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Chapter 8 Solutions