$2 \tan^{-1}(\cos x) = \tan^{-1}(\csc^2 x)$ હોય,તો $x = $

  • A
    $\frac{\pi}{2}$
  • B
    $\pi$
  • C
    $\frac{\pi}{6}$
  • D
    $\frac{\pi}{3}$

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સાબિત કરો કે $3 \sin ^{-1} x = \sin ^{-1}(3 x - 4 x^{3})$,જ્યાં $x \in [-\frac{1}{2}, \frac{1}{2}]$.

જો $\cos^{-1} x = \alpha$ $(0 < x < 1)$ અને $\sin^{-1} (2 x \sqrt{1 - x^2}) + \sec^{-1} (\frac{1}{2 x^2 - 1}) = \frac{2 \pi}{3}$ હોય,તો $\alpha$ ની કિંમત શોધો.

જો $x = {\sin ^{ - 1}}(\sin 10)$ અને $y = {\cos ^{ - 1}}(\cos 10)$ હોય,તો $y - x$ ની કિંમત શોધો.

$\sin \left[ 3 \sin^{-1} \left( \frac{1}{5} \right) \right] = $

$\tan ^{-1}\left(\frac{1}{2 \sqrt{2}}\right)+\sin ^{-1}\left(\frac{1}{\sqrt{3}}\right)=\cos ^{-1} x$ હોય, તો $x=$

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