$\sin 20^\circ \sin 40^\circ \sin 60^\circ \sin 80^\circ = $ ($/16$ में)

  • A
    $-3$
  • B
    $5$
  • C
    $3$
  • D
    $-5$

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Similar Questions

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यदि $x$ वास्तविक है और $x+\frac{1}{x}=2 \cos \theta$ है,तो $\cos \theta=$

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