# How do you find the amplitude, period and phase shift for #y=cos3(theta-pi)-4#?

##### 1 Answer

Mar 30, 2018

See below:

#### Explanation:

Sine and Cosine functions have the general form of

Where

In this case, the amplitude of the function is still 1 as we have no number before

The period is not directly given by

Period

Note- in the case of

and

Also as **principal axis** of the function, i.e the function revolves around