ParametricPlot[{Cos[t] (1 - Sin[t]), 
        Sin[t] (1 - Sin[t] )}, {t, 0, 2 π}, 
      AspectRatio -> Automatic, ImageSize -> 550]

ParametricPlot3D[{Cos[t] (1 - Sin[t]), Sin[t] (1 - Sin[t] ), 
        1}, {t, 0, 2 π}, AspectRatio -> Automatic, 
      ImageSize -> 550]