જો $\operatorname{Tanh}^{-1} x = \operatorname{Coth}^{-1} y = \log \sqrt{5}$ હોય,તો $\operatorname{Tan}^{-1}(xy) = $

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

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$\coth^{-1}(2) + \operatorname{cosech}^{-1}(-2\sqrt{2}) = $

વિધેયને તેના સરળ સ્વરૂપમાં લખો: $\tan ^{-1} \frac{x}{\sqrt{a^{2}-x^{2}}}, |x| < a$

જો $f(x) = \sin^{-1}(\sin x)$; $x \in R$ હોય,તો $f$ એ

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