解方程cos(3x-π/3）=√2/2

题目

解方程cos(3x-π/3）=√2/2

答案

cos（3x-π／3）=√2/2
3x-π/3=2kπ-π/4或3x-π/3=2kπ+π/4
3x=2kπ+π/12或3x=2kπ+7π/12
x=2kπ/3+π/36或x=2kπ/3+7π/36；k∈Z