The derivativebecomes
Therefore,
It will be left as an exerciseto provethat
The derivativesof the remainingtrigonometricfunctionsare shownin the tablebelow.
Derivativesof TrigonometricFunctionsKeepin mindthat for all the derivativeformulasfor the
trigonometricfunctions,the argumentxis measuredin radians.Example1:
Showthat [tanx] = sec^2 x.