A boat is heading due east at 21 km/hr (relative to the water). The current is moving toward the southwest at 8 km/hr.
1)Give the vector representing the actual movement of the boat.
2)How fast is the boat moving, relative to the ground? (km/hr)
3)By what angle does the current push the boat off its due east course? Your answer should be a positive angle less than \pi radians.