For a "modified sine" profile with cam interval of 120 degree and rise of 10mm (use b=0.25, c=0, d=0.75). Plot pressure angle as a function of cam rotation angle (0 to 120 degree, 5 degree interval) when 1) prime circle diameter is 45mm (i.e., base circle diameter 40mm and roller follower diameter 5mm) and 2) offset between cam center and axis of follow motion is 5mm.