Question

1)sin2π/3=. 2)Cos 2π/3. 3) tg2π/3. 4)ctg2π/3.

Answer 1

1)sin(120°) = ½√3 2)cos(120°) = -1/2 3)tg(120°) = -√3 4)ctg(120°) = -1/√3

Answer 2

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