Target angle submarine observer estimating target angle pictures himself on the target ship looking back at the submarine. Relative bearing of the submarine is the clockwise angle in degrees from the heading of the target ship to a straight line drawn from the target ship to the submarine. When target angle is 0° (or 360° ) the target ship is coming directly toward the submarine. Target angles between 0° and 90° indicate the target ship is moving toward and to the right of the submarine. Target angles between 90° and 180° indicate the target ship is moving to the right and away
Caster angle to move the steering wheel both into and out of each turn, making it difficult to maintain a straight line. In the context of bicycles and motorcycles, caster is more commonly referred to as "head angle", "rake angle" or "rake and trail", especially in American English. The terms caster or castor angle are still predominantly used in British English. Some bicycle constructors refer to the angle subtended by the mechanical trail at the wheel center as caster. Caster angle The caster angle or castor angle is the angular displacement of the steering axis from the vertical axis of a steered