$\tan ^{-1} 2+\tan ^{-1} 3=$

  • A
    $\frac{5 \pi}{4}$
  • B
    $\frac{\pi}{4}$
  • C
    $-\frac{\pi}{4}$
  • D
    $\frac{3 \pi}{4}$

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જો $a < \frac{1}{32}$ હોય,તો $(\sin^{-1} x)^3 + (\cos^{-1} x)^3 = a\pi^3$ ના ઉકેલોની સંખ્યા કેટલી થાય?

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

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