Тригонометрическое решить уравнение
2*√2/2*сos(x-π/4)=√2 (cos(π/4-x)=cos(x-π/4)) √2cos(x-π/4)=√2 cos(x-π/4)=1 x-π/4=2πn x=π/4+2πn,n∈z