MCQ
$|x| \geq 1, \tan \left[\frac{2}{3}\left(\tan ^{-1} x+\cot ^{-1} x\right)\right]=$
  • A
    $\frac{1}{\sqrt{3}}$
  • $\sqrt{3}$
  • C
    $0$
  • D
    1

Answer

Correct option: B.
$\sqrt{3}$
B

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