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3 Find cos(x+y), given that cosx= and siny = 2 3 TT

3 Find cos(x+y), given that cosx= and siny = 2 3 TT

Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter2: Analytic Trigonometry
Section2.3: Solving Trigonometric Equations
Problem 9ECP: Solve 4tan2x+5tanx6=0.
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V5 Find cos(x+y), given that cosx= 3 3 TT 0<x<- and siny = - 2 2 <y<2n. 2 Select one: V5-2/15 a. 10 b. None of these V5-/15 С. 9. V5+2/15 d. 10 V5 10
Transcribed Image Text:V5 Find cos(x+y), given that cosx= 3 3 TT 0<x<- and siny = - 2 2 <y<2n. 2 Select one: V5-2/15 a. 10 b. None of these V5-/15 С. 9. V5+2/15 d. 10 V5 10
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