3 ms·
Angle in radians is just (length of arc) / (radius). That is length/length, which cancel out - so angle is dimensionless. Solid angle is area/area.
by HPsquared 4y ago
Angle in radians is just (length of arc) / (radius). That is length/length, which cancel out - so angle is dimensionless.
Solid angle is area/area.
- nh23423fefe 4y agoanother way: if exp(x) implies x dimensionless then by euler identity sin and cos parameters are dimensionless as well.