Verified answer

Ответ:

x = +-(5п/6) + 2пn, n € Z

Объяснение:

cos(x+4π)+cos(x−6π)+√3=0

cosx + cosx + √3 = 0

2cosx = -√3

cosx = -√3/2

x = +-(π - arccos√3/2) + 2πn, n € Z

x = +-(п - п/6) + 2пn, n € Z

x = +-(5п/6) + 2пn, n € Z