14 years ago
Patricia M

How do you substitute the integral (cos(x))/(sin(x)2)?

The 2 outside of sin(x) is a square.
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14 years ago
Mein Hoon Na
Favorite Answer
because d/dx(sin x) = cos x we put t = sin x integrate dt/t^2 = integrate t^(-2) = t^(-1)/(-1) = -1/t = -1/ sinx
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