Actually, by default Rhino uses a mix of units for measuring angles. Try for example creating a line to:
r1<asin(1)
One does not get a 90° line. This is inconsistent!
Also, sometimes I would like to quickly copy angles to or from applications that work with radians. Being able to switch all angles to radians in Rhino would make life easier.
Hmm yeah, I see… I’ve never run across that but I tend to agree, input ought to be in degrees everywhere. I’ll add it to the heap. Thanks for pointing it out.
https://mcneel.myjetbrains.com/youtrack/issue/RH-49749
-Pascal
Thanks, Pascal!
If there was an option to switch angle units from degrees to radians, that would be highly appreciated as well. Though I understand, if I am the only one ever requesting this in the life time of Rhino, then priority will be very low. 
Hello - You can do that now by typing in ‘radians’, but you do have to specify
e.g. Line 0 r<asin(1)radians
That may be enough… But the buglet that I see is that the number coming out of asin(1) is in radians and actually maybe that is perfectly fine, it’s just that the command line has no context (that I know of) that would accept radians ‘tout court’ , without the units specified.
-Pascal
Surely you mean:
Line 0 1<asin(1)radians
Anyhow, this is a nice solution for that issue! What remains:
Is there any way to get the Angle command report angles in radians?
(to copy them to another application)