Mathematics, 12.08.2020 06:01, youdontknowme8989

Angle x is a third quadrant angle such that cos x =-2/3
What is the exact value of cos (x/2)

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Angle x is a third quadrant angle such that cos x =-2/3 What is the exact value of cos (x/2)

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Angle x is a third quadrant angle such that cos x =-2/3
What is the exact value of cos (x/2)