मान लीजिए $\theta, \phi \in [0, 2\pi]$ इस प्रकार हैं कि $2 \cos \theta(1-\sin \phi) = \sin^2 \theta \left(\tan \frac{\theta}{2} + \cot \frac{\theta}{2}\right) \cos \phi - 1$,$\tan (2\pi - \theta) > 0$ और $-1 < \sin \theta < -\frac{\sqrt{3}}{2}$ है। तो $\phi$ संतुष्ट नहीं कर सकता

  • A
    $0 < \phi < \frac{\pi}{2}$
  • B
    $\frac{\pi}{2} < \phi < \frac{4\pi}{3}$
  • C
    $\frac{4\pi}{3} < \phi < \frac{3\pi}{2}$
  • D
    $\frac{3\pi}{2} < \phi < 2\pi$

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