At a carnival, you are about to throw a spear at an underwater target lying flat on the bottom of the pool. The water is 1.0m deep. You are standing on a small stool that places your eyes 3.0m above the bottom of the pool. When you look at your target, your line of sight is 300 below the horizontal. At what angle below horizontal should you throw the spear in order to hit the target? Your raised arm brings the spear point to the level of your eyes as you throw it, and over this short distance you can assume that the spear travels in a straigh line rather than a parabolic trajectory.