Hey, I'm working on a TCAS and Navigation Display for the 787 (it's quite different from 747 and 777, so I need to make a new one) and to calculate some angles fr the vnav altitude graph, I need to use a few trig functions. How do I use them in nasal scripts?

I'll just need some simple functions like sin, cos, tan, arcsin, arccos and arctan.

Thanks a lot!