Предмет: Алгебра, автор: simsmir

Помогите решить тригонометрическое уравнение пожалуйста, желательно всё подробно объясняя на словах. Я уже немного решила

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Автор ответа: MolFarLittle

Делим уравнение на cos^2 x
Получаем 1-tg x=0
tg x=1
x=arctg1+пи*n,n принадлежитZ
x=пи/4 +пи*n,n принадлежит Z

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