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Posted by Blake on Tuesday, January 8, 2013 at 2:44am.

Prove 1+sec2x / tan2x = cotx

(cos2x+1)/cos2x / sin2x/cos2x (cos2x+1)/sin2x (2cos^2 x - 1 + 1)/(2sinx cosx) 2cos^2 x/(2sinx cosx) cosx/sinx cotx

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