A jetliner flies east for 600.0 km, then turns 30.0° toward the south and flies another 300.0 km.
(a) How far is the plane from its starting point?
(b) In what direction could the jetliner have flown directly to the same destination (in a straight-line path)?
(c) If the jetliner flew at a constant speed of 400.0 km/h, how long did the trip take?
(d) Moving at the same speed, how long would the direct flight have taken?