Предмет: Алгебра, автор: akon1708

  5sin^{2}x-7sinxcosx+4cos^{2}x=1
Помогите решить пожалуйста
или хотя бы объясните как решать

Ответы

Автор ответа: Mashenkamizani
1
4sin^2x-7sinx*cosx+3cos^2x=0   
Корни  х=1  х=0.75
akon1708: ой я тупой..... нда тяжелый случай. Спасибо)))
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