What is cos A, if cos 2A , and 2A is an angle in the fourth quadrant? 16 13 13 16 16 13 13 16 no correct answer

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 15E
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What is cos A, if cos 2A = , and 2A is an angle in the fourth quadrant?
16
13
V 16
16
13
13
16
no correct answer
Transcribed Image Text:What is cos A, if cos 2A = , and 2A is an angle in the fourth quadrant? 16 13 V 16 16 13 13 16 no correct answer
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