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December 21, 2014

December 21, 2014

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

- Math -
**Steve**, Tuesday, January 8, 2013 at 5:04am(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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