Question

What is the frequency of `f(theta)= sin 3 t - cos 8 t`?

Answer 1

`2pi`

Explanation:

Period of `sin 3t --> (2pi)/3`
Period of `cos 8t --> (2pi)/8.`
Find least multiple of `(2pi)/3 and (2pi)/8` -->
`(2pi)/3 . (3) --> 2pi`
`(2pi)/8 . (8) --> 2pi.`
Common period of `f(t) --> 2pi.`