If `2tan^(-1)(cosx)=tan^(-1)(2cosecx)`, then x=A. `(pi)/(4)`B. `(-pi)/ – InterviewSolution

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1.	If `2tan^(-1)(cosx)=tan^(-1)(2cosecx)`, then x=A. `(pi)/(4)`B. `(-pi)/(4)`C. `(pi)/(3)`D. `(pi)/(6)`
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