$\theta \in \left(0, \frac{\pi}{2}\right)$ માટે, $\operatorname{sech}^{-1}(\cos \theta)$ ની કિંમત શોધો.

  • A
    $\log \left|\tan \left(\frac{\pi}{6}+\frac{\theta}{2}\right)\right|$
  • B
    $\log \left|\tan \left(\frac{\pi}{3}+\frac{\theta}{2}\right)\right|$
  • C
    $\log \left|\tan \left(\frac{\pi}{4}+\frac{\theta}{2}\right)\right|$
  • D
    $\log \left|\tan \left(\frac{\pi}{4}-\frac{\theta}{2}\right)\right|$

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જો $a > b > 0$ અને $\sec^{-1} \left( \frac{a+b}{a-b} \right) = 2 \sin^{-1} x$ હોય,તો $x$ ની કિંમત શોધો.

ધારો કે $\tan ^{-1}\left(\tan \frac{5 \pi}{4}\right) = \alpha$ અને $\tan ^{-1}\left(-\tan \frac{2 \pi}{3}\right) = \beta$. તો:

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