$2 \tanh^{-1} \frac{1}{2}$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $\log 2$
  • C
    $\log 3$
  • D
    $\log 4$

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$\cos^{-1}\left(x^2 + \frac{1}{x^2} - 1\right) + \sin^{-1}\left(x^2 - \frac{1}{x^2}\right) + \tan^{-1}(x^2)$ का मान ज्ञात कीजिए (जहाँ $x \in R - \{0\}$)

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$\tan ^{-1}(-\sqrt{3})-\sec ^{-1}(-2)=$ . . . . . . .

$\cos \left( \sin^{-1} \frac{5}{13} \right) = $

$\sin ^{-1}\left(\frac{-1}{2}\right)+\sin ^{-1}\left(\frac{-\sqrt{3}}{2}\right)$ का मान ज्ञात कीजिए।

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