यदि $\frac{2 \sin \theta}{1+\cos \theta+\sin \theta}=y$ है,तो $\frac{1-\cos \theta+\sin \theta}{1+\sin \theta}=$

  • A
    $y$
  • B
    $\frac{1}{y}$
  • C
    $1-y$
  • D
    $1+y$

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