$\int \frac{1}{\sqrt{1 + \sin x}} \, dx = $

  • A
    $2\sqrt{2} \log \tan \left( \frac{\pi}{8} + \frac{x}{4} \right) + c$
  • B
    $\frac{1}{\sqrt{2}} \log \tan \left( \frac{\pi}{8} + \frac{x}{4} \right) + c$
  • C
    $\sqrt{2} \log \tan \left( \frac{\pi}{8} + \frac{x}{4} \right) + c$
  • D
    $\frac{1}{2\sqrt{2}} \log \tan \left( \frac{\pi}{8} + \frac{x}{4} \right) + c$

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