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Пример шести тригонометрических функций угла θ = 0.7 радиан, построенный в единичной окружности. Величины, отмеченные 1, Sec(θ) и Csc(θ) равны длинам сегментов луча, исходящего из центра окружности. Величины Sin(θ), Tan(θ) и 1 равны высотам над осью
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23 February 2018
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