Wednesday, May 22, 2013

Simplify: cos^2(x)/sin (x) +csc (-x)


 



%0D%0A%28cos%5E2%28x%29-1%29%2Fsin+%28x%29=+-sin%5E2%28x%29%2Fsin%28x%29=-sin%28x%29%0D%0A 


:)
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