posted by John .
A boat heads directly across a river with a velocity of 12 m/s. If the river flows at 6.0 m/s find the magnitude and direction (with respect to the shore) of the boat's resultant velocity.
magnitude = sqrt(12^2+6^2) = 13.4
tan A = 12/6 = 2
so A = 1.11 radians = 63.4 degrees