The CN Tower is one of the tallest free–standing structures in the world. A woman on the observation deck, 350 m above the ground, wants to determine the distance between two landmarks on the ground below. She observes that the angle formed by the lines of sight to these two landmarks is 43 . She also observes that the angles of depression from the landmarks are 54 and 62 respectively. Find the distance between the landmarks. State all applicable laws and definitions used on appropriate triangles in order to determine your answer.