> What’s 20° + 1 radian? They’re both unitless quantities that have compatible dimensions.
How are they unitless if you add ° behind one and "radian" behind the other?
How are they unitless if you add ° behind one and "radian" behind the other?
> the SI unit for measuring angles
> defined in the SI as being a dimensionless value
Radians and degrees are both ratios where the units cancel out - ie. m/m. The point that is made is that adding degrees to radians without any conversions is technically fine from a dimensional analysis perspective, but it's often a bug in programming that we might want to prevent.
The only difference is that full circle is a little less arbitrary than Earth circumference.