Use the given information to find the exact value of the expression. 13) sin a = 24 , a lies in quadrant II, and cos ß = B lies in quadrant I 25 Find cos (a - B).

Trigonometry (MindTap Course List)
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ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter2: Analytic Trigonometry
Section2.1: Using Fundamental Identities
Problem 1ECP: Use the conditions tanx=13 and cosx0 to find the values of all six trigonometric functions.
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Use the given information to find the exact value of the expression.
a lies in quadrant II, and cos B = B lies in quadrant I
13) sin a =
25
24
Find cos (a - B).
Transcribed Image Text:Use the given information to find the exact value of the expression. a lies in quadrant II, and cos B = B lies in quadrant I 13) sin a = 25 24 Find cos (a - B).
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