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June 29, 2015

Homework Help: Pre-Calc : Verify the Identity

Posted by Phil-- HELP NEEDED ASAP on Friday, May 10, 2013 at 9:43am.

Verify the Identity:
sin(x+π)/cos(x+3π/2) =tan^2x-sec^2x

I've done:
sinxcosπ+cosxsinπ
/
cosxcos(3π/2) - sinxsin(3π/2)

sinx(-1) + cosx(0)
/
cosx(0)- sinx(-1)

-sinx/sinx


What do I do from here? Or what did I do wrong?

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