I just made a tutorial on trigonometry in gaming situations, such as 360 degree shooting, for a few people who asked about it.
People who don't know trig yet might see the concept as rather scary, so I simplified it, and made it easier to understand why the things work the way they do. If you want to learn 360 degree shooting and the like, I strongly suggest you use this tutorial.
20 frames, several examples, including:
360 Degree Shooting
Dynamic Satellites (change radius and speed)
Dynamic Waves (control position, frequency, and amplitude)
Dynamic Moving Waves (control position, frequency, amplitude, and speed)
The examples are commented.
Oh, also note that no obscure extensions are used. It uses actives, strings, and buttons. This should work in TGF2 as far as I know.
Hopefully an admin will allow this in the Tutorial section of the site, as I designed it for there.