Math 111 - Trigonometry
Practice Exam 2
Warning: This study guide is not all inclusive- there may be material on the test which
is covered in the book but not here. This is simply meant to be a supplemental study aid to
the homework and class notes
1. Graph two periods of y=−2 + 4 cos(π(x−2)). Find the amplitude, period, and
average value. Label the axes in a way to reflect the important characteristics of the
graph (i.e. when the function reaches it maximum, minimum, and average value).
2. Below is a data table for a function involving a trigonometric function.
x-1 0 1 2 3 4
y3 7 11 7 3 7
Determine a possible formula for the trigonometric function.
