Предмет: Алгебра, автор: Adolf1Gitler

Нужна ваша помощь!!!!!!!!!!!!!!!!!!!!
5sin2X-4cosX=0

Ответы

Автор ответа: mymurkin

2

10sinxcosx-4cosx=0
2cosx(5sinx-2)=0
2cosx=0 5sinx-2=0
cosx=0 sinx=2/5
x=pi/2 + pi*n x=(-1)^n*arcsin2/5+pi*n

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