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April 27, 2015

Homework Help: Trig check my work please?

Posted by Carry on Monday, February 23, 2009 at 8:45pm.

tan(X+30)tan(30-x)=2cos2x-1 / (2cos2x+1)

i just did

(tanx)(-tanx)=-sin^2x/cos^2x would taht work?

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