A submarine is 300 m horizontally out from the shore and 128 m beneath the surface of the water. A laser beam is sent from the submarine so that the beam strikes the surface of the water 247 m from the shore. A building stands on the shore, and the laser beam hits a target at the top of the building. The goal is to find the height of the target above sea level.
(a) Draw a diagram of the situation, identifying the two triangles that are important to finding the solution.