જો $\sec^{-1} x = \csc^{-1} y$ હોય,તો $\cos^{-1} \frac{1}{x} + \cos^{-1} \frac{1}{y} = $

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

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$2 \tan^{-1}(\cos x) = \tan^{-1}(\csc^2 x)$ હોય,તો $x = $

જો $\frac{1}{2} \sin^{-1}\left(\frac{3 \sin 2\theta}{5+4 \cos 2\theta}\right) = \tan^{-1} x$ હોય,તો $x =$

$\tan \left(\sin ^{-1} \frac{3}{5}+\cot ^{-1} \frac{3}{2}\right)$ ની કિંમત શોધો.

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