ધારો કે $S = \{ x : \cos^{-1} x = \pi + \sin^{-1} x + \sin^{-1}(2x + 1) \}$. તો $\sum_{x \in S} (2x - 1)^2$ ની કિંમત . . . . . . છે.

  • A
    $5$
  • B
    $6$
  • C
    $7$
  • D
    $8$

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જો $\tan ^{-1} \frac{1}{5}+\frac{1}{2} \sec ^{-1} x+\tan ^{-1} \frac{1}{8}=\frac{\pi}{8}$ હોય, તો $x^2=$

$\sec ^2(\tan ^{-1} 2) + \operatorname{cosec}^2(\cot ^{-1} 3)$ ની કિંમત શોધો.

$\left[\sin \left(\tan ^{-1} \frac{3}{4}\right)\right]^{2}+\left[\sin \left(\tan ^{-1} \frac{4}{3}\right)\right]^{2}=$

સમીકરણ $\operatorname{Tan}^{-1}\left(x+\frac{\sqrt{2}}{x}\right)+\operatorname{Tan}^{-1}\left(x-\frac{\sqrt{2}}{x}\right)=\operatorname{Tan}^{-1}(x)$ નું સમાધાન કરતા $x$ ના મૂલ્યોની સંખ્યા કેટલી છે?

$\sec ^2(\tan ^{-1} 2)+\operatorname{cosec}^2(\cot ^{-1} 3)$ ની કિંમત શોધો.

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