$\tan \left\{\frac{1}{2} \cos ^{-1} \frac{\sqrt{5}}{3}\right\}$ ની કિંમત શોધો.

  • A
    $\frac{3-\sqrt{5}}{2}$
  • B
    $\frac{3+\sqrt{5}}{2}$
  • C
    $\frac{\sqrt{5}-1}{2}$
  • D
    $\frac{\sqrt{5}+1}{2}$

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