5. The angular displacement of the disk after the finger comes in contact with it is 13.2 rad 6. Because r=0.3 I found x final to be 0.249 and using cosine-1(0.249/0.3) I discovered that the angle was 33.9 degrees. I then multiplied 360 by 2 to get 720 because the disk goes around twice. I then added 720 to the angle and got 753.9 which converted to radians