помогите с алгеброй)
вычислить: tg (-5п/6)
cos -5*π/6 = - cos (π + 5*π/6) = cos π/6 = √ 3 / 2
tg(-5g/6)=150градусов
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cos -5*π/6 = - cos (π + 5*π/6) = cos π/6 = √ 3 / 2
tg(-5g/6)=150градусов