Question

Use my radians find the amplitude and period of each function then graph

Answer 1

For a function of the form:

`y=acos(b\theta)`

a = amplitude = 2

b = angular frequency = 1/4

The period can be calculated as follows:

`\begin{gathered} T=(2\pi)/(b) \\ So: \\ T=(2\pi)/(1/4) \\ T=8\pi \end{gathered}`

Now, we can graph the function easily: