All of the waves on the previous page look pretty much the same. To get more interesting graphs, we can add two waves.
In the section below, you can select a function and enter numbers into the three fields for two different waves. For example, if you put a 2 in the first field and a 4 in the second field and a 45 in the third field and click the Start button, you will see the graph of 2 sin(4A + 45), where A represents the current angle.
The third strip chart at the bottom will show you the result of adding the two waves together. Just play around with a variety of numbers and see what you can come up with.
There are other ways to make neat diagrams that show the trails of sine and cosine.