A sailboat sails for 1 hr at 4 km/hr (relative to the water) on a steady compass heading
of 40◦ east of north. The sailboat is simultaneously carried along by a current. At the
end of the hour the boat is 6.12 km from its starting point. The line from its starting point
to its location lies 60◦ east of north. Find the x (easterly) and y (northerly) components
of the water’s velocity.