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:

$\begin{gathered} T=\frac{2\pi}{b} \\ So: \\ T=\frac{2\pi}{1/4} \\ T=8\pi \end{gathered}$

Now, we can graph the function easily: