Предмет: Геометрия, автор: Spiderik

АС - касательная , AB - хорда окружности с центром в точке О , угол AOB = 45° . Чему равен угол BOC? Сделайте чертеж.

Ответы

Автор ответа: timurchik1497
0

треугольник АОВ равнобедр т к АО=ОВ радиусы значит угол А=углу В 
180-45=135
135/2=67.5
ВАС=67.5

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