Cos and Arc Cos and also Arc Tan

There are some interesting things you can do with cos and acos.

This person on YouTube produced some interesting visualizations (thang010146). In particular, the door for limited space demonstrated acos beautifully.

https://www.youtube.com/watch?v=jWxtaYE_5n0

I have created a corresponding hipnc file called

and an improved version that takes into account the "ball bearings":

There are more applications of this — see my section on pointWrangle nodes, in particular the pointWrangle acos example.

You can use these similarly with sin and tan, not just cos. Here is a longer explanation of atan.

https://www.youtube.com/watch?v=stndScVpWBw&t=21s

If your trig is a little rusty, here are a few starter videos.