Primitive of Reciprocal of Cosine of a x

Also see

 * Primitive of $\dfrac 1 {\sin a x}$


 * Primitive of $\dfrac 1 {\tan a x}$


 * Primitive of $\dfrac 1 {\cot a x}$


 * Primitive of $\dfrac 1 {\sec a x}$


 * Primitive of $\dfrac 1 {\csc a x}$