Question

What is the period of `f(theta)= sin 7 t - cos 3 t`?

Answer 1

`2pi`

Explanation:

Period of sin 7t --> `(2pi)/7`
Period of cos 3t --> `(2pi)/3`
Common period of f(t) --> `2pi`
Check:
`(2pi)/7` x 7 --> `2pi`
`(2pi)/3` x 3 --> `2pi`