यदि $x * y = x^{2} + y^{3}$ और $(x * 1) * 1 = x * (1 * 1)$ है,तो $2 \sin^{-1}\left(\frac{x^{4} + x^{2} - 2}{x^{4} + x^{2} + 2}\right)$ का मान ज्ञात कीजिए।

  • A
    $\frac{\pi}{4}$
  • B
    $\frac{\pi}{3}$
  • C
    $\frac{\pi}{2}$
  • D
    $\frac{\pi}{6}$

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Similar Questions

$\cot \left( \sum\limits_{r = 1}^\infty \tan^{-1} \left( \frac{4}{4r^2 + 3} \right) \right)$ का मान किसके बराबर है?

$\tan \left[ 2\tan^{-1}\left( \frac{1}{5} \right) - \frac{\pi}{4} \right] = $

$\tan^{-1} \left( \frac{\sqrt{1 + x^2} - 1}{x} \right) = $

$\begin{aligned} & \text{यदि } \cot \left(\cos ^{-1} x\right)=\sec \left\{\tan ^{-1}\left(\frac{a}{\sqrt{b^2-a^2}}\right)\right\} \\ & b>a, \text{ तो } x= \end{aligned}$

$\sin [\cot ^{ - 1}(\cos \tan ^{ - 1}x)] =$

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