$2\sin A{\cos ^3}A - 2{\sin ^3}A\cos A = $

  • A
    $\sin 4A$
  • B
    $\frac{1}{2}\sin 4A$
  • C
    $\frac{1}{4}\sin 4A$
  • D
    આમાંથી કોઈ નહીં

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જો $x = a \operatorname{cosec}^{n} \theta$ અને $y = b \cot^{n} \theta$ હોય,તો $\theta$ નો લોપ કરતા શું મળે?

$\frac{[\sin (y-z)+\sin (y+z)+2 \sin y]}{[\sin (x-z)+\sin (x+z)+2 \sin x]} = ?$ ની કિંમત શું છે?

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