An airplane has to fly eastward to a destination 865 km away. If wind is blowing at 18.8 m/s northward and the airspeed of the plane is 166 m/s, in what direction should the plane head to reach its destination?
If A is angle below x axis (x is east)
speed south = 166 sin A
speed north = 18.8
in the end must go straight east so
166 sin A = 18.8
compass heading = 90 + A