Express cos (a) in terms of cos(2a). Express sin (a) in terms of cos(2a). cos² (a) COS sin (a)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 40E
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Express cos (a) in terms of cos(2a).
Express sin? (a) in terms of cos(2a).
cos² (a)
?(a)
COS
sin² (a)
SI
Transcribed Image Text:Express cos (a) in terms of cos(2a). Express sin? (a) in terms of cos(2a). cos² (a) ?(a) COS sin² (a) SI
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