Предмет: Геометрия, автор: LadyElla

Помогите пожалуйста! Найдите угол ABC, ответ дайте в градусах

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Автор ответа: яфизик

если прочертить отрезок АС то получится равнобедренный треугол зная что сумма углов =180 3х=180 х=60 а их две стороны значит угол АСВ=углу АВС=60 градусам

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