Solve the all parts of following question given below:
Question: A plane has an airspeed of 400mph . The pilot wishes to reach a destination 800mi due east, but a wind is blowing at 60mph in the direction 30 degrees north of east.
Part A: In what direction must the pilot head the plane in order to reach her destination?
Part B: How long will the trip take?
I know the correct answer for above question but explain how to get this answer! Thanks.