Evan Abrams Looks at Working With the Sin Expression in After Effects.
Tutorial Author Evan Abrams has a look at what the Sin Expression does and how you can use it in Ae to control properties. The tutorial shows how easy it is to make things oscillate in a regular wave. “You may learn some math. You will make some waves.” Evan says about it. Dan Ebberts has a pretty thorough article that covers the basics of physical simulations, and mainly the Sine Math Function.