page35 Published September 23, 2018 at 1024 × 768 in 9/17-9/21 (Vectors,Cir Mot) PhyFl18SS1.6.11 Definition of a radian. The question came up . . . “Why don’t radians have any units?” Because they are a ratio of the arc length of a circle (∆s) and the radius of that d Related