Ship A is 10 km due west of ship B. Ship A is heading directly north at a speed of 30km/hr, whilst ship B is heading in a direction 60 degress west of norht at a speed of 20km/hr. a) Deteremine the magnitude and direction of the velocity of ship B relative to ship A. b) What will be their distance of closest approach? My Attempt for the first part B Relative to A, first into compentents, so sin(60)*20=17.3 and cos(60)*20=10 Then relative to A would be 10 km west and 30-17.3= 12.67 km south however the actual answer is Velocity is 26.5 km/h in a direction South 41 degrees West. How was i supposed to do it, and how do i start part b.