The general value of $\theta$ satisfying the equation $\tan \theta + \tan \left( \frac{\pi}{2} - \theta \right) = 2$ is:

  • A
    $n\pi - \frac{\pi}{4}$
  • B
    $n\pi + \frac{\pi}{4}$
  • C
    $2n\pi \pm \frac{\pi}{4}$
  • D
    $n\pi + (-1)^n \frac{\pi}{4}$

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