As soon as the cue ball contacts the object ball in this case the 12 ball for the side pocket it deflects and want to travel along the imaginary brown line. This is the path that the cue ball wants to travel on. This helps with position and you have to remember your speed on how hard you hit the cue ball. The harder you hit the cue ball the longer the your angler is and vise versa. By applying this to your game will help you dramatically improve your skills. Professional players know this and that's why they are so consistent. By following the tangent line you will be able to move the cue ball around the table and have excellent position on every shot. Hope this helps you become better players.
Posted by- John Ferguson