$\cot \left(\cos ^{-1} x\right)$ এর মান কোনটি ?

$\frac{x}{\sqrt{1-x^{2}}}$

$\frac{\sqrt{1-x^{2}}}{x}$

$\frac{1}{\sqrt{1-x^{2}}}$

$\frac{\sqrt{x}}{\sqrt{1-x^{2}}}$