Question

Пожалуйста решите система уравнение

Answer 1

x + y = π
cosx - cosy = 1

y = π - x
cosx - cos(π - x) = 1

y =π - x
cosx + cosx = 1
2cosx = 1
cosx = 1/2
x = (+ -)arccos(1/2) + 2πn, n∈z
x =( + -)(π/3) + 2πn, n∈Z
y = π - (+ -)(π/3) + 2πn, n∈Z