Решите систему cosx + cosy = корень из 3 x + y = π/3

x+y=π/3 x=π/3-y cos(π/3-y)+cosy=√3 2cosπ/6*cos(π/6-y)=√3 2*√3/2*cos(π/6-y)=√3 cos(π/6-y)=1 sin(y+π/3)=1 y+π/3=π/2 y=π/2-π/3 y=π/6+2πn,n∈z x=π/3-π/6 x=π/6+2πn,n∈z