# What is the period of #f(t)=cos ( ( 5 t ) / 2 ) #?

##### 1 Answer

May 3, 2016

#### Explanation:

One way to get the period from a sinusoid is to recall that the argument inside the function is simply the angular frequency,

which means that for our case

The angular frequency is related to the normal frequency by the following relation:

which we can solve for

The period,