આપેલ છે કે $\pi < \alpha < \frac{3\pi}{2}$,તો પદાવલિ $\sqrt{4\sin^4 \alpha + \sin^2 2\alpha} + 4\cos^2 \left(\frac{\pi}{4} - \frac{\alpha}{2}\right)$ ની કિંમત શોધો.

  • A
    $2$
  • B
    $2 - 4\sin \alpha$
  • C
    $2$ અને $2 - 4\sin \alpha$
  • D
    આમાંથી કોઈ નહીં

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