List of top Mathematics Questions on Inverse Trigonometric Functions asked in KCET

$\tan^{-1} \left( \frac{1}{1 + 1 \cdot 2} \right) + \tan^{-1} \left( \frac{1}{1 + 2 \cdot 3} \right) + \dots + \tan^{-1} \left( \frac{1}{1 + n \cdot (n+1)} \right) =$

If $\sin^{-1} x + \sin^{-1} y = \pi/2$, then $x^2$ is equal to

If $f(x) = \sin^{-1}\left(\frac{2x}{1 + x^2}\right)$, then $f'\left(\frac{1}{2}\right) =$