Inverse Trigonometric Derivatives
$\displaystyle \frac{d}{dx} \sin^{1}(x) = \frac{1}{\sqrt{1x^2}}$
$\displaystyle \frac{d}{dx} \cos^{1}(x) = \frac{1}{\sqrt{1x^2}}$
$\displaystyle \frac{d}{dx} \tan^{1}(x) = \frac{1}{1+x^2}$
$\displaystyle \frac{d}{dx} \csc^{1}(x) = \frac{1}{x\sqrt{x^21}}$
$\displaystyle \frac{d}{dx} \sec^{1}(x) = \frac{1}{x\sqrt{x^21}}$
$\displaystyle \frac{d}{dx} \cot^{1}(x) = \frac{1}{1+x^2}$
