EBK DELMAR'S STANDARD TEXTBOOK OF ELECT
6th Edition
ISBN: 9781305537125
Author: Herman
Publisher: YUZU
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Textbook Question
Chapter 15, 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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SO
52
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54
53
3
52
53
S2
56
51
0
$5
5
54
S4
53
0
55
58
57
7
56
56
55
0
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S10
59
1
58
58
S7
0
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S12
S11
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S12
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S14
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515
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Chapter 15 Solutions
EBK DELMAR'S STANDARD TEXTBOOK OF ELECT
Ch. 15 - 1. Which trigonometric function is used to find...Ch. 15 - 2. If side A has a length of 18.5 ft and side B...Ch. 15 - Prob. 3RQCh. 15 - Prob. 4RQCh. 15 - 5. The hypotenuse has a length of 65 in., and side...Ch. 15 - Prob. 6RQCh. 15 - Prob. 7RQCh. 15 - Prob. 8RQCh. 15 - Using the dimensions in Question 8, what is the...Ch. 15 - Prob. 10RQ
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