$x$ ની કિંમત શોધો જેથી $\sin \left(2 \tan ^{-1} \frac{3}{4}\right)=\cos \left(2 \tan ^{-1} x\right)$ થાય.

  • A
    $7$
  • B
    $\frac{3}{7}$
  • C
    $\frac{1}{7}$
  • D
    $\frac{4}{7}$

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$\tan \left( \tan^{-1} \frac{1}{2} - \tan^{-1} \frac{1}{3} \right)$ નું મૂલ્ય શું છે?

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