$\int \frac{\sin x \cdot \sec ^2 x-\tan x \cdot \sin x+\cos x}{(1-\cos 2 x)} d x=$

  • A
    $\frac{1}{2}\left[\sec x-\operatorname{cosec} x-\log \left|\tan \left(\frac{x}{2}\right) \tan \left(\frac{\pi}{4}+\frac{x}{2}\right)\right|\right]+c$
  • B
    $\sec x+\operatorname{cosec} x+\log \left|\frac{\tan \left(\frac{x}{2}\right)}{\tan \left(\frac{\pi}{4}+\frac{x}{2}\right)}\right|+c$
  • C
    $\frac{1}{2}\left[\sec x-\operatorname{cosec} x-\log \left|\frac{\tan \left(\frac{\pi}{4}+\frac{x}{2}\right)}{\tan \left(\frac{x}{2}\right)}\right|\right]+c$
  • D
    $\sec x+\operatorname{cosec} x-\log \left|\tan \left(\frac{x}{2}\right)\right|+c$

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