A true bearing is the angle which a line makes from the observer's position to an object with the line pointing to

A true bearing is the angle between the direction of an object from the observer's position and the direction pointing towards True North. True North is the direction towards the geographic North Pole, and it is not affected by magnetic variation, which is the angle between magnetic North and True North. Magnetic North is the direction towards the Earth's magnetic North Pole, which is not located at the geographic North Pole. Therefore, a true bearing is not affected by magnetic variation, but it is important to take magnetic variation into account when using a compass to determine a magnetic bearing. The Southern Hemisphere is a geographic region and is not directly related to the concept of true bearing.