Need help finding my answer

1. A pilot points his plane 60.00 S of W and maintains an air speed of 75.00 km/hr. After flying for 90.00 minutes, he finds himself over a town that is 150.0 km west and 120.00 km south of his starting point.

(a) Find the magnitude and direction of the plane's velocity with respect to Earth.

(b) Find the magnitude and direction of the wind's velocity with respect to Earth.

(c) Draw a picture showing how the vectors add together graphically. Clearly label each vector as well and each angle.

(d) If the wind velocity were 45.00 km/hr to the northeast, in what direction should the pilot set his course in order to travel due south, if possible?