यदि $\int \frac{dx}{1+\sin x} = \tan \left(\frac{x}{2}-\theta\right) + C$ है,तो $\theta=$

  • A
    $\frac{\pi}{2}$
  • B
    $\frac{\pi}{4}$
  • C
    $\pi$
  • D
    $\frac{\pi}{6}$

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