$\sin ^{2} 75^{\circ}-\sin ^{2} 15^{\circ}$ નું મૂલ્ય કેટલું છે?

  • A
    $\frac{\sqrt{3}}{2}$
  • B
    $-\frac{\sqrt{3}}{2}$
  • C
    $\frac{1}{2}$
  • D
    આમાંથી કોઈ નહીં

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