For clarity, the diagram has been relabelled. Line WY is parallel to line QT Angle UVS is equal to angle RAS (Alternate angles) =40∘ Bearing starts from the North. The bearing of B from A is the angle from P to S Angle from P to S= Angle of straight line PR+ Angle RAS Angle on a straight line =180∘ Angle of straight line PR=180∘ Angle RAS=40∘ The bearing of B from A=180∘+40∘ The bearing of B from A=220∘