GraphingCalculator 3.0; Window 151 14 541 398; PaneDivider 141; FontName "Palatino"; FontSizes 18 12 10; 2D.T 0 6.28; 2D.BottomLeft -1.359375 -2.875; Color 2; Expr vector(x,y)=vector(cos(0.61*t),sin(0.61*t));