Differentiation of trigonometric functions

The differentiation of trigonometric functions is the mathematical process of finding the derivative of a trigonometric function, or its rate of change with respect to a variable. For example, the derivative of the sine function is written sin′(a) = cos(a), meaning that the rate of change of sin(x) at a particular angle x = a is given by the cosine of that angle.

Function	Derivative
${\displaystyle \sin(x)}$	${\displaystyle \cos(x)}$
${\displaystyle \cos(x)}$	${\displaystyle -\sin(x)}$
${\displaystyle \tan(x)}$	${\displaystyle \sec ^{2}(x)}$
${\displaystyle \cot(x)}$	${\displaystyle -\csc ^{2}(x)}$
${\displaystyle \sec(x)}$	${\displaystyle \sec(x)\tan(x)}$
${\displaystyle \csc(x)}$	${\displaystyle -\csc(x)\cot(x)}$
${\displaystyle \arcsin(x)}$	${\displaystyle {\frac {1}{\sqrt {1-x^{2}}}}}$
${\displaystyle \arccos(x)}$	${\displaystyle -{\frac {1}{\sqrt {1-x^{2}}}}}$
${\displaystyle \arctan(x)}$	${\displaystyle {\frac {1}{x^{2}+1}}}$
${\displaystyle \operatorname {arccot}(x)}$	${\displaystyle -{\frac {1}{x^{2}+1}}}$
${\displaystyle \operatorname {arcsec}(x)}$	${\displaystyle {\frac {1}{|x|{\sqrt {x^{2}-1}}}}}$
${\displaystyle \operatorname {arccsc}(x)}$	${\displaystyle -{\frac {1}{|x|{\sqrt {x^{2}-1}}}}}$

All derivatives of circular trigonometric functions can be found from those of sin(x) and cos(x) by means of the quotient rule applied to functions such as tan(x) = sin(x)/cos(x). Knowing these derivatives, the derivatives of the inverse trigonometric functions are found using implicit differentiation.