MCQ
$\tan ^{-1} 1+\tan ^{-1} 2+\tan ^{-1} 3=$
  • A
    $\frac{\pi}{3}$
  • B
    $\frac{\pi}{2}$
  • $\pi$
  • D
    $\frac{\pi}{4}$

Answer

Correct option: C.
$\pi$
C

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