$\frac{(\cos 2\theta - i\sin 2\theta)^4 (\cos 4\theta + i\sin 4\theta)^{-5}}{(\cos 3\theta + i\sin 3\theta)^{-2} (\cos 3\theta - i\sin 3\theta)^{-9}}$ ને $x + iy$ સ્વરૂપમાં દર્શાવો.

  • A
    $\cos 49\theta - i\sin 49\theta$
  • B
    $\cos 23\theta - i\sin 23\theta$
  • C
    $\cos 49\theta + i\sin 49\theta$
  • D
    $\cos 21\theta + i\sin 21\theta$

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