$\cos^{-1}(\cos 12) - \sin^{-1}(\sin 14)$ ની કિંમત શોધો.

જો $\tan ^{-1} \frac{1}{5}+\frac{1}{2} \sec ^{-1} x+\tan ^{-1} \frac{1}{8}=\frac{\pi}{8}$ હોય, તો $x^2=$

ધારો કે $f(x) = \cos \left(2 \tan ^{-1} \sin \left(\cot ^{-1} \sqrt{\frac{1-x}{x}}\right)\right)$,$0 < x < 1$ માટે. તો :

જો $\tan^{-1}\left(\frac{x-1}{x+1}\right) + \tan^{-1}\left(\frac{2x-1}{2x+1}\right) = \tan^{-1}\left(\frac{23}{36}\right)$ હોય,તો $x =$

જો $y = \operatorname{Sin}^{-1}\left(\frac{\sqrt{1+\sin x}+\sqrt{1-\sin x}}{\sqrt{1+\sin x}-\sqrt{1-\sin x}}\right)$ અને $\frac{-3\pi}{2} < x < \frac{-\pi}{2}$ હોય,તો $\frac{dy}{dx} = $

$\cos ^{-1} \frac{3}{5} + \sin ^{-1} \frac{5}{13} + \tan ^{-1} \frac{16}{63} = $