જો $\cos A = \frac{3}{4}$ હોય,તો $32\sin \left( \frac{A}{2} \right)\sin \left( \frac{5A}{2} \right) = $

  • A
    $7$
  • B
    $8$
  • C
    $11$
  • D
    આમાંથી કોઈ નહીં

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