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решите треугольник авс , если угол с = 54 градуса , а=6,7 ,в=6,7
найти -угол А ,угол В , с?-
Предмет:
Математика -
Автор:
skipper4 - 6 лет назад
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Ответы 1
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Угол А=углу В, т.к. треугольник равнобедренный. Угол А=(180-54)/2=63 град. Сторону с находим по теореме косинусов: c^2=a^2+b^2-2ab*cos C =(6,7)^2+(6,7)^2-2*6,7*6,7*cos 54≈37
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Автор:
elaine - 6 лет назад
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