Answer:
45°
Step-by-step explanation:
The degrees on a compass start at 0° at the north and increase in a clockwise direction.
The bearing from H to K is the number of degrees measured from North to the line that joins the centre of the compass to point K.
Thus, the red arrow represents a bearing of 225° from H to K.
The opposite direction (the blue arrow) is the back bearing. It is 180° from the bearing.
To get back bearing, you subtract 180° if the bearing is greater than 180° and add 180° if the bearing is less than 180°.
Thus, the back bearing from K to H is
225° - 180° = 45°
