Предмет: Геометрия, автор: valmkss22

решите пж ..())!!))))!(()((

Приложения:

zmeura1204: 2) ∠EBC=30°; ЕВ=2*ЕС=2*7=14; ∠АЕВ=180-60=120; ∠А=180°-120°-30°=30°; ∆АВЕ- равнобедренный; АЕ=ЕВ=14

Ответы

Автор ответа: schoolmol

1) АВ 10, против угла 30 градусов лежит катет равный половине гипотенузы
2) угол СВЕ 90-60=30, АЕ= 14, т к катет против угла 30 равен половине гипотенузы , СЕ=7, значит ВЕ=14, АЕВ =120, как смежный, Угол АВЕ = 30, ВЕ биссектриса,
Треугольник АВЕ равнобедренный , углы при основании равны, , значит АЕ=14
Ответ: 14

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