The CN Tower in Toronto, Canada, is the tallest free-standing structure in the world. A woman on the observation deck, 1100 ft 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 50. She also observes that the angle between the vertical and the line of sight of one of the landmarksa is 47 and to the other landmark , is 45. Find the distance between the two landmarks.