Question

No calculator needed! been stuck for a while. how do I solve this style of question?

Answer 1

-
`√(3)` and 0

Explanation:

tan(2x)

= tan(2 ×
`(\pi )/(3)` ) = tan(
`(2\pi )/(3)` ) = - tan(
`(\pi )/(3)` ) = -
`√(3)`

cos(3x) = cos(3 ×
`(\pi )/(6)` ) = cos(
`(\pi )/(2)` ) = 0