Предмет: Алгебра, автор: sjvix

2tgcosx-2cosx-tgx+1=0

Ответы

Автор ответа: Опыт

0

2cosx(tgx-1)-(tgx-1)=0
tgx=1 cosx=0
x=П/4+Пk x=П/2+Пk

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