$\frac{\sin 5 \theta}{\sin \theta}$ किसके बराबर है?

  • A
    $16 \cos ^4 \theta-12 \cos ^2 \theta+1$
  • B
    $16 \cos ^4 \theta+12 \cos ^2 \theta+1$
  • C
    $16 \cos ^4 \theta-12 \cos ^2 \theta-1$
  • D
    $16 \cos ^4 \theta+12 \cos ^2 \theta-1$

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