Question

Question #07c95

Answer 1

`(kpi)/3`
`(2pi)/3 + (2kpi)/3`

Explanation:

cos 3t = 1
Unit circle gives 2 solutions:

a. `3t = 0 + 2kpi` --> `t = 0 + (kpi)/3`
b. `3t = 2pi + 2kpi` --> `t = (2pi)/3 + (2kpi)/3`