Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN: 9780134217437
Author: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher: PEARSON
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Question

Verify the identities. 

A) (2sinx+cosx)^2 + (2cosx-sinx)^2=5

B) (cos(theta)+1)/tan^2(theta)= (cos(theta))/sec(theta)-1

C) (1-cosx)/(1+cosx) = (cotx-cscx)^2

 

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