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What are the exact values of sin(2π/3radians) and cos(2π/3radians)?
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What are the exact values of sin(2π/3radians) and cos(2π/3radians)?

User Daniel Marcus
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sin(2π/3radians) = sin(π/3radians) = (√3)/2cos(2π/3radians) = - cos(π/3radians) = 1/2

becuase 2π/3 + π/3 = π





User Michael Trojanek
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