Recap: X=R COS(0)=R coS(ot) y=R sin(0)=R sin(ot) 0= tan1 (y/x) R S 0= ot =0t s=vt S=R0 Rot V=OR Physics 121: Lecture 11, Pg 3Physics 121: Lecture 11, Pg 3 Recap: R v s =t (x,y) x = R cos() = R cos(t) y = R sin() = R sin(t)  = tan-1 (y/x)  = t s = v t s = R = Rt v = R