Question

решите систему пожллуйста )

x+y=п

sinx+siny=-√2

 

Answer 1

x+y=$pi$
sinx+siny=-√2

2sin(x+y)/2*cos(x-y)/2=-√2
y=π-x

sin π/2*cos(2x-π)=-√2/2
cos(2x-π)=-√2/2

cos(-(π-2x)= -√2/2
cos(π-2x)=-√2/2
cos 2x=√2/2
2x=π/4
x=π/8