The principal solution `cosx=-(1)/(2)` isA. `(2pi)/(3)`B. `(pi)/(3)`C. – InterviewSolution

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1.	The principal solution `cosx=-(1)/(2)` isA. `(2pi)/(3)`B. `(pi)/(3)`C. `(5pi)/(4)`D. `-(pi)/(3)`
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