પદાવલિ $\frac{(\cos 2\theta + i\sin 2\theta)^7}{(\cos 4\theta + i\sin 4\theta)^3}$ ને સરળ બનાવો.

  • A
    $\cos 2\theta + i\sin 2\theta$
  • B
    $\cos 2\theta - i\sin 2\theta$
  • C
    $\cos 4\theta + i\sin 4\theta$
  • D
    $\cos 4\theta - i\sin 4\theta$

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