Cos(2Pi - x) + sin(Pi/2 + x) =√2
cos(-x) + cosx = √2
2cosx = (√2)
cosx = (√2)/2 => x = ±arccos((√2)/2) + 2Pi*n, n∈Z
x= ±Pi/4 + 2Pi*n, n∈Z
Cos(2Pi - x) + sin(Pi/2 + x) =√2
cos(-x) + cosx = √2
2cosx = (√2)
cosx = (√2)/2 => x = ±arccos((√2)/2) + 2Pi*n, n∈Z
x= ±Pi/4 + 2Pi*n, n∈Z