verify the identity secx-secx sin^2x= cosx

That's all I have, just need to verify.
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1 Answer

secx-secx sin^2x= cosx

secx(1-sin^2x)=cosx

because sin^x + cos^x=1, 1-sin^2x=cos^2x

secx cos^2x=cosx

(I/cosx) cos^2x=cosx

cosx=cosx 

 

by Level 8 User (35.3k points)

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