જો $\sin ^{-1} a=\alpha+\beta$ અને $\sin ^{-1} b=\alpha-\beta$ હોય,તો $\sin ^2 \alpha+\cos ^2 \beta=$ . . . . . . .

  • A
    $a b-1$
  • B
    $1-a b$
  • C
    $1+a b$
  • D
    $a b$

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$\sin \left( {2{{\tan }^{ - 1}}\left( {\frac{1}{3}} \right)} \right) + \cos ({\tan ^{ - 1}}(2\sqrt 2 ))$ ની કિંમત શોધો.

$\tan ^{-1} \sqrt{3} - \cot ^{-1}(-\sqrt{3}) = $ . . . . . . .

$\cot \left[\sum_{n=3}^{32} \cot ^{-1}\left(1+\sum_{k=1}^n 2 k\right)\right]=$

$\tan^{-1} \left( \frac{\sin 2 - 1}{\cos 2} \right)$ ની કિંમત શોધો:

સમીકરણ $\tan^{-1}(1 + x) + \tan^{-1}(1 - x) = \frac{\pi}{2}$ નો ઉકેલ શોધો.

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