Question

What is the period of `f(t)=cos 10 t`?

Answer 1

P= `(pi)/5`

Explanation:

Periods for Cos, Sin, Csc, and Sec functions:
`P= (2pi)/B`

Periods for Tan and Cot:
`P= (pi)/B`

`B` stands for horizontal stretch or compression

So in this case:
For: `f(t)= cos10t`
B is equal to 10

Therefore:
`P=(2pi)/10= pi/5`