2COS(X/4-ПИ/6)=КОРЕНЬ ИЗ 3

cos(x/4-п/6)=√3/2х/4-п/6=+-п/6+2пn,n€zx/4=-п/6+п/6+2пn,n€zx/4=п/6+п/6+2пn,n€zx=8пn,n€zx=4п/3+8пn,n€z