Derivative of Cosine Function/Corollary

Corollary to Derivative of Cosine Function

 * $\map {\dfrac \d {\d x} } {\cos a x} = -a \sin a x$

Also see

 * Derivative of $\sin a x$


 * Derivative of $\tan a x$
 * Derivative of $\cot a x$


 * Derivative of $\sec a x$
 * Derivative of $\csc a x$