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April 27, 2015

Homework Help: trig

Posted by Jay on Sunday, December 4, 2011 at 11:42am.

We are doing trig identities in school. I need help with these five:

1.1+sinx/1-sinx=cscx+1/cscx-1

2.tanx+sinx/1+cosx=tanx

3.sec^2x/sin^2x=1/sin^2x+1/cos^2x

4.tan^2x/1+tan^2x=1-cos^2x

5.sinx-sin^3x/cos^3x=tanx

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