1. The problem statement, all variables and given/known data A child walks due east on the deck of a ship at 1 miles per hour. The ship is moving north at a speed of 4 miles per hour. Find the speed and direction of the child relative to the surface of the water. 2. Relevant equations 3. The attempt at a solution I've already found the magnitude. But now I can't find the direction. They want: "The angle of the direction from the north = " What does that mean? I've solved it using the inverse tangent for both angles of the triangle and apparently neither is right. So maybe it's even simpler than I think?