$\tan \left[\frac{\pi}{4}+\frac{1}{2} \cos ^{-1}\left(\frac{a}{b}\right)\right]+\tan \left[\frac{\pi}{4}-\frac{1}{2} \cos ^{-1}\left(\frac{a}{b}\right)\right]$ ની કિંમત શોધો.

  • A
    $\frac{2 a}{b}$
  • B
    $\frac{2 b}{a}$
  • C
    $\frac{a}{b}$
  • D
    $\frac{b}{a}$

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

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$\tan ^{-1} x+\cos ^{-1}\left(\frac{y}{\sqrt{1+y^2}}\right)=\sin ^{-1}\left(\frac{3}{\sqrt{10}}\right)$ ના ધન પૂર્ણાંક ઉકેલોની સંખ્યા કેટલી છે?

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