Question

нужно решить уравнение:
cos(x/2 - 2 \pi /3)= -1

Answer 1

cos(x/2-2π/3)=-1
x/2-2π/3=π+2πn, n∈Z
x/2=2π/3+π+2πn,n∈Z
x/2=5π/3+2πn, n∈Z
x=10π/3+4πn, n∈Z