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хэлен5
@хэлен5
October 2021
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ребятушки, ну очень надо :cos(2arctgкорень 3 + arcctg1/корень3
как решить? чему равно?
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Universalka
Verified answer
Cos(2arctg√3 + arcctg 1/√3) = Cos(2*π/3 + π/3) = Cos (3π/3) = Cosπ = - 1
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Verified answer
Cos(2arctg√3 + arcctg 1/√3) = Cos(2*π/3 + π/3) = Cos (3π/3) = Cosπ = - 1