Answer:
Figure of the function is included below as attachment.
Step-by-step explanation:
Let
As first step we have to find x intercepts, maxima and minima from 0 to 2π, which are needed to plot given function. Cosine is a trigonometric function bounded between -1 and 1 with a periodicity of 2π.
x-Intercepts
x-intercepts are those points of the function such that
. That is:

In this case, there is a periodicity of π for
. The x-intercepts are in the following set:

Maxima
Maxima are those points of the function such that
. That is:

In this case, there is a periodicity of 2π for
. Maxima are in the following set:

Minima
Minima are those points of the function such that
. That is:

In this case, there is a periodicity of 2π for
. Minima are in the following set:

Lastly, we proceed to plot the function as well as its x-intercepts, maxima and minima with the help of a plotting tool.