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в единичном кубе а д1 найдите угол между прямыми ад1 и а1в
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Предмет:
Геометрия -
Автор:
butternutttwe - 5 лет назад
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Ответы 1
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Задача сводится к определению угла между А1В и ВD. А т. к. треугольник А1ВD равносторонний, то этот угол равен 60 градусов.
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Автор:
leocadiabrewer - 1 год назад
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10
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