This method has been described before. It may give a beginner an idea of where to aim the cueball, but the error it produces makes it rather useless for a more advanced player. The error comes from equating cut angles with impact angles.

The "impact angle" is the desired object ball direction measured from the line joining the centers of the CB and OB in their pre-shot resting positions. The "cut angle" is the desired object ball direction measured from the pre-impact CB aim direction. The difference between them increases with cut angle and inversely with the distance between the balls.

Consider desired impact angles of 30, 45 and 60 degrees as examples (1:00, 1:30, and 2:00 in this system). With a CB-OB distance of 10 ball diameters between centers (22.5"), actually aiming such that the "V" is at 1:00, 1:30, and 2:00 (ie, taking the 'cut angles' to be 30, 45 and 60 degrees), generates errors in the OB's direction of 3.1, 4.4, and 5.2 degrees, respectively. If the CB-OB distance is 6 ball diameters (13.5"), the errors are now 5.6, 7.6 and 8.9 degrees!

When you add the fact that there are also errors produced in determining the the location of the "V" in the first place, and these will add positively to the system's intrinsic errors roughly half the time (unless you have a built in perceptual bias), it's not really that helpful a system for more experienced players, imo.

Jim