Предмет: Алгебра, автор: AlexeyDoroshko

(2cosa - 7sina)/(2sina - 2cosa), если tga = 2
Помогите!!!

Ответы

Автор ответа: Матов
0
tga=frac{sina}{cosa}=2\ sina=2cosa\ frac{2cosa-7sina}{2sina-2cosa}=frac{2cosa-14cosa}{4cosa-2cosa}=-6
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