A plane takes off from an airport and flies to town A, located 
d1 = 265 km
 from the airport in the direction 20.0° north of east. The plane then flies to town B, located 
d2 = 235 km
 at 30.0° west of north from town A. Use graphical methods to determine the distance and direction from town B to the airport. (Enter the distance in km and the direction in degrees south of west.)