Предмет: Математика, автор: lauvinc16290

Найдите угол BOC, если угол ABO = 40°, а O - центр окружности.​

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Автор ответа: liliz28
3
:если ABO=40°, то ВАО тоже 40°
АОС диаметр =180° -(40+40)= 100°угол АОВ
Также АОС диаметр =180°-100°=80°уголВОС
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