समीकरण $\sin^{-1} x = 2\tan^{-1} x$ का हल समुच्चय क्या है?

  • A
    $\{1, 2\}$
  • B
    $\{-1, 2\}$
  • C
    $\{-1, 1, 0\}$
  • D
    $\{1, \frac{1}{2}, 0\}$

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सिद्ध कीजिए कि $\cot ^{-1}\left(\frac{\sqrt{1+\sin x}+\sqrt{1-\sin x}}{\sqrt{1+\sin x}-\sqrt{1-\sin x}}\right)=\frac{x}{2}$,जहाँ $x \in\left(0, \frac{\pi}{4}\right)$.

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यदि $0 \leq x \leq \frac{1}{2}$ है,तो $\tan \left[\sin ^{-1}\left\{\frac{x}{\sqrt{2}}+\frac{\sqrt{1-x^{2}}}{\sqrt{2}}\right\}-\sin ^{-1} x\right]$ का मान ज्ञात कीजिए।

$\tan ^{-1}\left\{\frac{\sqrt{1+x}-\sqrt{1-x}}{\sqrt{1+x}+\sqrt{1-x}}\right\}+\frac{1}{2} \cos ^{-1} x$ का मान है

यदि $x$ एक गैर-धनात्मक स्वीकार्य मान लेता है,तो $\sin^{-1} x =$

यदि $\sin^{-1}(x - 2) + \cos^{-1}(x) + \tan^{-1}(x + 2) + \cot^{-1}(x + 4) = \sec^{-1}(\sqrt{k}) - \frac{\pi}{2}$ है, तो $\cos(2 \csc^{-1}\sqrt{k - 1}) = \dots$

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