For clarity, the diagram has been relabelled.Line WY is parallel to line QTAngle 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 SAngle from P to S= Angle of straight line PR+ Angle RASAngle 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∘