व्यंजक $[1 - \sin(3\pi - \alpha) + \cos(3\pi + \alpha)] [1 - \sin(\frac{3\pi}{2} - \alpha) + \cos(\frac{5\pi}{2} - \alpha)]$ को सरल करने पर क्या प्राप्त होता है?

  • A
    $ \sin 2\alpha $
  • B
    $ - \sin 2\alpha $
  • C
    $ 1 - \sin 2\alpha $
  • D
    $ 1 + \sin 2\alpha $

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