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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Please prove identity by transforming the left side into the right side:

(1+secx)(1-cosx) = (tan^2 x)( cosx)

(please note tan^2 means tan squared)

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