Предмет: Геометрия, автор: malvinaasha

В треугольнике ABC проведена биссектриса AL, угол ALC равен 76∘, угол ABC равен 47∘. Найдите угол ACB. Ответ дайте в градусах.

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Ответы

Автор ответа: Daria55

угол ALB=180гр - 76гр=104гр
угол BAL=180гр-104гр-47гр=29гр
угол BAL= угол LAC=29гр
угол АСВ= 180гр-29гр-76гр=75гр

ответ: угол АСВ=75гр

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