Решите уравнение cos(x/2-p/4)+1=0

Question

Решите уравнение cos(x/2-p/4)+1=0

Answer 1

cos(x/2-p/4)+1=0

cos(x/2-p/4)=-1

x/2-pi/4=pi+2pi n

x/2=pi/4+pi+2pi n=5pi/4 +2pi n

x=5pi/2+ 4pi n