c. sin 2x = 2 tan x 1+tan² x d. 2 cos x cos 2x+1 = sec x

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 41E
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c. sin 2x
2 tan x
1+tan² x
d.
2 cos x
cos 2x+1
= sec x
Transcribed Image Text:c. sin 2x 2 tan x 1+tan² x d. 2 cos x cos 2x+1 = sec x
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