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jhekakasoy
@jhekakasoy
July 2022
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В прямоугольном треугольнике BCЕ с прямым углом B внешний угол при вершине C равен 120 градусов . СВплюс СЕ равно 12,3 см Найти C B и C Е
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dxo17a
1. T.k.
внешний угол при вершине C равен 120 градусов => <BCE=180-120=60
<CEB=90-60=30
2. CB=x, => CE=2x
x+2x=12,3 cm
3x=12,3 cm
x=4,1 cm
CB=4,1 cm CE=4,1*2=8,2 cm
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Answers & Comments
<CEB=90-60=30
2. CB=x, => CE=2x
x+2x=12,3 cm
3x=12,3 cm
x=4,1 cm
CB=4,1 cm CE=4,1*2=8,2 cm