$\sin 12^\circ \sin 24^\circ \sin 48^\circ \sin 84^\circ = $

  • A
    $\cos 20^\circ \cos 40^\circ \cos 60^\circ \cos 80^\circ $
  • B
    $\sin 20^\circ \sin 40^\circ \sin 60^\circ \sin 80^\circ $
  • C
    $\frac{3}{15}$
  • D
    इनमें से कोई नहीं

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