Предмет: Алгебра, автор: Назым12062000

cos (30°+2x)+1=0 как решить?

Ответы

Автор ответа: sedinalana

0

cos(30+2x)=-1
30+2x=180+360*n,n∈z
2x=150+360*n,n∈z
x=75+180*n,n∈z

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