Предмет: Алгебра, автор: dave21

помогите пожалуйста.....

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Автор ответа: nazarkinakatya

треугольник АВО равнобедренный так как АО=ОВ=радиусу.
=> угол ОВА=углу ОАВ=60° ( углы при основании равнобедренного треугольника)
угол АОВ= 180-(ОВА+ОАВ)=180-120=60°
=> ∆АВО равносторонний( все углы равны 60°)
значит АО=ОВ=АВ=8
ответ:8

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