Question

решите срочно уравнение cos(x+п/6)=-корень из 3/2

Answer 1

x+π/6=5π/6+2πk,k∈z U x+π/6=7π/6+2πn,n∈z
x=2π/3+2πk,k∈z U x=π+2πn,n∈z