If \[2{{\tan }^{-1}}(\cos x)={{\tan }^{-1}}(2\text{cosec }x),\] then x

1.	If \[2{{\tan }^{-1}}(\cos x)={{\tan }^{-1}}(2\text{cosec }x),\] then x =
A.	\[\frac{3\pi }{4}\]
B.	\[\frac{\pi }{4}\]
C.	\[\frac{\pi }{3}\]
D.	None of these
Answer» C. \[\frac{\pi }{3}\]

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If \[2{{\tan }^{-1}}(\cos x)={{\tan }^{-1}}(2\text{cosec }x),\] then x =

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