Question

How do you solve: cos(x-π/3)=-1​

Answer 1

x =
`(4\pi )/(3)`

Explanation:

given

cos(x -
`(\pi )/(3)`) = - 1, then

x -
`(\pi )/(3)` =
`cos^(-1)`(- 1) = π

Add
`(\pi )/(3)` to both sides, hence

x = π +
`(\pi )/(3)` =
`(4\pi )/(3)`