Primitive of Cube of Tangent of a x

Theorem

 * $\displaystyle \int \tan^3 a x \rd x = \frac {\tan^2 a x} {2 a} + \frac 1 a \ln \size {\cos a x} + C$

Also see

 * Primitive of $\sin^3 a x$
 * Primitive of $\cos^3 a x$
 * Primitive of $\cot^3 a x$
 * Primitive of $\sec^3 a x$
 * Primitive of $\csc^3 a x$