$\tan ^{-1}\left(\frac{1}{2 \sqrt{2}}\right)+\sin ^{-1}\left(\frac{1}{\sqrt{3}}\right)=\cos ^{-1} x$ હોય, તો $x=$

  • A
    $\frac{1}{\sqrt{3}}$
  • B
    $\frac{1}{\sqrt{2}}$
  • C
    $\frac{2}{\sqrt{3}}$
  • D
    $\frac{1}{2 \sqrt{2}}$

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જો $\cot ^{-1}(\alpha)=\cot ^{-1} 2+\cot ^{-1} 8+\cot ^{-1} 18+\cot ^{-1} 32+\ldots$ $100$ પદો સુધી હોય,તો $\alpha$ ની કિંમત શોધો.

$\tan ^2(\sec ^{-1} 4) + \cot ^2(\operatorname{cosec}^{-1} 3)$ નું મૂલ્ય શોધો.

જો $\tan (x + y) = 33$ અને $x = \tan^{-1}(3)$ હોય,તો $y$ ની કિંમત શું થશે?

સાબિત કરો કે $\sin ^{-1} \frac{3}{5}-\sin ^{-1} \frac{8}{17}=\cos ^{-1} \frac{84}{85}$

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