જો $\theta = \sec^{-1}(\cosh u)$ હોય,તો $u =$

  • A
    $\log_e\left(\cot \left(\frac{\theta}{2} - \frac{\pi}{4}\right)\right)$
  • B
    $\log_e\left(\tan \left(\frac{\theta}{2} - \frac{\pi}{4}\right)\right)$
  • C
    $\log_e\left(\tan \left(\frac{\pi}{4} - \frac{\theta}{2}\right)\right)$
  • D
    $\log_e\left(\tan \left(\frac{\pi}{4} + \frac{\theta}{2}\right)\right)$

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ધારો કે $a_1=1, a_2, a_3, a_4, \ldots$ ક્રમિક પ્રાકૃતિક સંખ્યાઓ છે. તો $\tan ^{-1}\left(\frac{1}{1+ a _1 a _2}\right)+\tan ^{-1}\left(\frac{1}{1+ a _2 a _3}\right)+\ldots+\tan ^{-1}\left(\frac{1}{1+ a _{2021} a _{2022}}\right)$ ની કિંમત શોધો.

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

જો $A=2 \tan ^{-1}\left(\frac{1+x}{1-x}\right)$ અને $B=\cos ^{-1}\left(\frac{1-x^2}{1+x^2}\right)$,જ્યાં $x \in(0,1)$,તો $A-B=$

$\sin ^{-1}\left(\frac{3}{5}\right)-\sin ^{-1}\left(\frac{8}{17}\right)=$ . . . . . .

${\tan ^{ - 1}}\left[ {\cos \left( {2\,{{\tan }^{ - 1}}\frac{3}{4}} \right)\, + \,\sin \,\left( {2\,{{\cot }^{ - 1}}\frac{1}{2}} \right)} \right]$ ની કિંમત શું છે?

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