Question

How do you find the amplitude and period of `y=2/3 costheta`?

Answer 1

The answers are `=2/3` and `=2pi`

Explanation:

The amplitude is the maximum value of y and is `=2/3`

and the peroid is `T=2pi`

graph{2/3cosx [-0.266, 10.83, -2.3, 3.247]}