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Автор - aNastyaaasya

Решите уравнение 2cos(x+П/4)=1

Ответ

Автор - cvetok5501

Ответ:2cos(x-π/4)=-1

cos(x-π/4)=-1/2

x-π/4=±arccos(-1/2)+2πk

x-π/4=±(π-π/3)+2πk

x=π/4±2π/3+2πk;k€Z

Пошаговое объяснение:

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