The solution of $3\tan (A - {15^o}) = \tan (A + {15^o})$ is
The solution of $3\tan (A - {15^o}) = \tan (A + {15^o})$ is
- A
$n\pi + \frac{\pi }{4}$
- B
$2n\pi + \frac{\pi }{4}$
- C
$2n\pi - \frac{\pi }{4}$
- D
$\frac{{n\pi }}{2} + {( - 1)^n}\frac{\pi }{2}$
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- [KVPY 2015]
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