Trig: How Much Clearance Will This Plane Have?

You are lying down 31 yards in front of a 36 yard tall tower on flat land. You spy an airplane flying level some distance above the tower in line with and heading toward you and the tower. At this moment the front of the plane is at an angle of elevation of 41� from you. From the pilots vantage point, the top of the tower is at an angle of depression of 17�. Assuming the plane keeps the same elevation, by how far will the plane clear the tower? Give your answer accurate to the hundredths place.