Primitive of Power of Cotangent of a x

Theorem

 * $\ds \int \cot^n a x \rd x = \frac {-\cot^{n - 1} a x} {\paren {n - 1} a} - \int \cot^{n - 2} a x \rd x + C$

Also see

 * Primitive of $\sin^n a x$
 * Primitive of $\cos^n a x$
 * Primitive of $\tan^n a x$
 * Primitive of $\sec^n a x$
 * Primitive of $\csc^n a x$