newRPL: Angles revisited

[Claudio L.]

(04-04-2016 11:52 AM)Claudio L. Wrote:  Since I can't find a way to make things work correctly, I think we should drop the part that doesn't work and simplify:

* Tagged angles could be used for user entry.
* Tagged angles could be used for return values of trig functions.
* Any operation (I mean any) done on a tagged angle will convert it to the current angle system and remove the tag prior to doing the operation itself.
* Commands will exist to convert between all tag formats, and to explicitly tag a number.

I know it will eliminate many of the useful features (like directly adding/subtracting angles in DMS), but at least won't introduce any weirdness.

I guess there's no harm in adding this:
* Addition/subtraction between 2 tagged angles returns a tagged angle with the same system as the left argument.
All other operations, or if angles get mixed with numbers, will convert to current angle system units and remove the tag, then operate.