8. Prove the following identities. Please show steps clearly. cosx a) secx+ tan x =- 1-sinx cos2x+1 b) = cotx sin 2x

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 44E
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8. Prove the following identities. Please show steps clearly.

8. Prove the following identities. Please show steps clearly.
cosx
a) secx+ tan x =-
1-sinx
cos2x+1
b)
sin 2x
= cotx
Transcribed Image Text:8. Prove the following identities. Please show steps clearly. cosx a) secx+ tan x =- 1-sinx cos2x+1 b) sin 2x = cotx
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