1.

If \[{{\tan }^{-1}}x+2{{\cot }^{-1}}x=\frac{2\pi }{3},\]then x = [Karnataka CET 1999]

A. \[\sqrt{2}\]
B. 3
C. \[\sqrt{3}\]
D. \[\frac{\sqrt{3}-1}{\sqrt{3}+1}\]
Answer» D. \[\frac{\sqrt{3}-1}{\sqrt{3}+1}\]


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