Предмет: Алгебра, автор: кристюшень

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Автор ответа: kristoffer95

находим косинус из тригонометрической единицы, кос=+-4/5, учитываем, что для данного угла кос должен быть со знаком -, то есть -4/5, и находим тангенс=3/5 : (-4/5)= -3/4

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