Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 14, Problem 1RQ
Which trigonometric function is used to find the angle if the length of the hypotenuse and of the adjacent side are known?
Expert Solution & Answer
To determine
The trigonometric function that is used to find the angle if the length of the hypotenuse and length of the adjacent side are known.
Answer to Problem 1RQ
Cosine functionis used to find the angle if the length of the hypotenuse and length of the adjacent side are known.
Explanation of Solution
In the figure above,
A: Side opposite to angle X, adjacent to angle Y
B: Side opposite to angle Y, adjacent to angle X
Hence,
Hypotenuse, side A and angle Y are related as : cos Y = side A/Hypotenuse
Hypotenuse, side B and angle X are related as : cos X = side B/Hypotenuse
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Chapter 14 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 14 - 1. Which trigonometric function is used to find...Ch. 14 - 2. If side A has a length of 18.5 ft and side B...Ch. 14 - Prob. 3RQCh. 14 - Prob. 4RQCh. 14 - 5. The hypotenuse has a length of 65 in., and side...Ch. 14 - Prob. 6RQCh. 14 - Prob. 7RQCh. 14 - Prob. 8RQCh. 14 - Using the dimensions in Question 8, what is the...Ch. 14 - Prob. 10RQ
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