Prove one of the following identities. 1-tan2 x 2 tan x Cos 2x = sin 2x 1+tan2 x 1+tan² x

Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter5: Identities And Formulas
Section5.4: Half-angle Formulas
Problem 46PS: Prove the following identities. 2cos22=sin21cos
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Prove one of the following identities.
1-tan2 x
2 tan x
Cos 2x =
sin 2x
1+tan2 x
1+tan² x
Transcribed Image Text:Prove one of the following identities. 1-tan2 x 2 tan x Cos 2x = sin 2x 1+tan2 x 1+tan² x
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