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OpenStudy (anonymous):
Prove: secx tanx(1-sin^2(x))=sinx
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OpenStudy (anonymous):
\[1/cosx *sinx/cosx*\cos ^{2}x) = sinx\]
OpenStudy (anonymous):
got it?
OpenStudy (anonymous):
how did you get cos^2(x)?
OpenStudy (anonymous):
cos^2(x) = cos^2x-sen^2x
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