Предмет: Алгебра, автор: azamat352922

cos2x=корень из 3 делить на 2

$cos2x=frac{sqrt{3}}{2}$

Ответы

Автор ответа: mefody66

Это табличное уравнение
1) 2x = +-pi/6 + 2pi*k
x = +-pi/12 + pi*k

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