Question

помогите пожалуйста!

Answer 1

{x+y=π/2
{sinx+cosx=√2;   √2sin(π/4+x)=√2; sin(π/4+x)=1; π/4+x=π/2; x=(2π-π)/4;
x=π/4;  y=π/2-π/4; y=π/4                   (π/4;π/4)