જો $A = \tan^{-1}x$ હોય,તો $\sin 2A = $

  • A
    $\frac{2x}{\sqrt{1 - x^2}}$
  • B
    $\frac{2x}{1 - x^2}$
  • C
    $\frac{2x}{1 + x^2}$
  • D
    આમાંથી કોઈ નહીં

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જો $\tan ^{-1}\left(\frac{1-x}{1+x}\right)=\frac{1}{2} \tan ^{-1} x$ હોય,તો $x$ ની કિંમત શોધો.

જો $\cos ^{-1} x = \sin ^{-1}(3x)$ હોય,તો $x$ ની કિંમત શોધો.

$\tan ^{-1}\left(\tan \frac{31 \pi}{6}\right)=$ . . . . . . .

જો $2 \cos \left(2 \tan ^{-1} x\right)=1$ હોય,તો $x=$ . . . . . .

જે અંતરાલ માટે ${\sin ^{ - 1}}\sqrt x + {\cos ^{ - 1}}\sqrt x = \frac{\pi }{2}$ સાચું છે તે:

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