Support trigonometric functions on Angles

[nathanielknight]

Is there a good way to support trigonometric functions on Angle quantities? It seems like converting them to radians in floating point, calling the relevant std trig function, and returning a Ratio quantity (with Results in the right places to deal with Floating Point Weirdness and domain violations) would be useful.

If that's something that wouldn't be too hard to implement, I could try to add it.

[iliekturtles]

This can be done and I've been meaning to add a new issue with details but haven't had time. See #144 (comment) where this was discussed recently. If you want to submit a PR that would be great!

[nathanielknight]

Great to hear 😄.

I'll see if I can get one method working and open a WIP pull request so there's something concrete to comment on.