B.O.B- Muddy Point

So Friday night I started all of our packets and worksheets that we had to do. I was a little behind because I missed Thursday's class. But despite that I was able to work through most of the worksheets. However, when I got to the writing formulas I was not able to work through the tangent and cotangent graphs. I could not, and still can't,  figure out how the amplitude affects the graph. I looked online, but I am still a little confused. Other than that though, I feel pretty prepared for the test on Tuesday.