Предмет: Математика, автор: Ikrinka29

Лучи BD и BE делят развёрнутый угол ABC на три угла градусные меры которых относятся как 5 : 3 : 2 . найдите градусную меру большого угла

Ответы

Автор ответа: Аноним

х-1 часть,5х-1 угол,3х-2 угол,2х-3 угол
5х+3х+2х=180
10х=180
х=180:10=18--1 часть
18*5=90-больший угол

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