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По данным рисунка 83 найдите cos a
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Предмет:
Геометрия -
Автор:
dashawn5cgc - 5 лет назад
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Ответы 1
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Данный треугольник - прямоугольный. По определению косинус угла - это отношение прилежащего катета к гипотенузе, значитcosα=15/39=5/13.Ответ: cosα=5/13.
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Автор:
darius925 - 2 года назад
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20
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