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May 22, 2015

Homework Help: Math (Trig) a.s.a.p, thanks!

Posted by Hailey on Thursday, April 10, 2008 at 8:43am.

verify the identities:

1.) 2tanx-(1+tanx)^2 = -secx

2.) cos(x-330degrees)=1/2(3cosx-sinx)
*the is only over the 3*

3.)
1+cos2x/sinx=cotx

any help is greatly appreciated!!

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