Trigonometry and bearings question

[Poojapriya]

A light aeroplane is flown from a farm airstrip to a city runway that is 135 km away. The city runway is due north from the farm airstrip. To avoid a storm, the pilot flies the aeroplane on a bearing of 310° for 50 km, and then due north for 45 km. The pilot then heads directly to the city runway. Round your answers to two decimal places in the following.

a Find how far west the aeroplane diverged from the direct line between the farm airstrip and the city runway.

b Find how far south the aeroplane was from the city runway before heading directly to the city runway on the final leg of the flight.

c Find the bearing the aeroplane was flying on when it flew on the final leg of the flight.

Can I please get a diagram explaining this question and steps required to solve this question (especially part c)?

[calliope]

West1=50sin(50)
North1=50cos(50), North2=45, North3=?
North1+North2+North3=135
North3=135-North1-North2
bearing angle of final leg of flight is tan(b)=North3/West1
See diagram attached and good luck