यदि $\frac{3x+1}{(x-1)(x+3)}=\frac{A}{x-1}+\frac{B}{x+3}$ है,तो $\sin^{-1} \frac{A}{B}$ का मान ज्ञात कीजिए।

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

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$\tan^{-1} \left( \cot \frac{43\pi}{4} \right)$ का मुख्य मान ज्ञात कीजिए।

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$\tanh ^{-1}\left(\frac{1}{2}\right)+\operatorname{coth}^{-1}(2)$ का मान ज्ञात कीजिए।

यदि $\tan ^{-1}\left(\frac{1-x}{1+x}\right)=\frac{1}{2} \tan ^{-1} x$ है,तो $x$ का मान ज्ञात कीजिए।

$\sin ^{-1}\left(\frac{1}{2}\right)+\cos ^{-1}\left(\frac{\sqrt{3}}{2}\right)+\cot ^{-1}\left(-\frac{1}{\sqrt{3}}\right)=$

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