$\sin 18^{\circ}$ का मान क्या है?

  • A
    $\frac{4}{\sqrt{5}-1}$
  • B
    $\frac{\sqrt{5}-1}{4}$
  • C
    $\frac{\sqrt{5}+1}{4}$
  • D
    $\frac{4}{\sqrt{5}+1}$

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