Предмет: Геометрия, автор: женя504

найти углы триугольникптАВС если угал В на 40 градусов большетуглаа А а угол С в пятт раз больше угла А

Ответы

Автор ответа: 6969228

1 этап:Пусть 1 угол х,тогда 2 угол х+40,а 3 угол 5х.Сумма углов равна 180 2 этап Составим уравнение:х+5х+х+40=180

х+5х+х+40=180 7х=140

х=140/7

х=20 - 1 угол

20+40=60 - второй угол

20*5=100 - третий угол Ответ:20,60,100

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