Im supposed to verify that (1-sinx)/(1+sinx) = (secx-tanx)^2(adsbygoogle = window.adsbygoogle || []).push({});

RHS = (secx-tanx)^2 = (1/cosx - sinx/cosx)^2 = [(1-sinx) / cosx]^2

= [(1-sinx)(1-sinx)]/cosx^2 = (1-2sinx+sinx^2)/(1-sinx^2)

From here, I'm feeling pretty confused. I'm not even sure if all my values are correct.

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# Homework Help: Proving a Trigonometric Identity

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