Question

Consider the graph of the cosine function shown below.
a. Find the period and amplitude of the cosine function.
b. At what values of theta do maximum value(s), minimum values(s), and zeros occur?

I know the amplitude is 2 (duh) and I'm guessing the period is pi/2. Am I right? Please help with b.!!!

Answer 1

Here's the graph. :D

Answer 2

yes

Answer 3

Max: (0,2) & (pi/2, 2)
Min: I think (pi/4, -2)
Zeros: (pi/8, 0) and (pi/2, 0)