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МатематикаВопрос:
The cosine of an acute angle of a right-angled triangle is equal to the ratio of the length of the adjacent leg to the length of the hypotenuse.
Ответ:
Ответ:
1. Верно
Обоснование:
Это определение косинуса острого угла в прямоугольном треугольнике. Косинус угла равен отношению прилежащего катета к гипотенузе.
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