Avani is trying to find the height of a radio antenna on the roof of a local building. She stands at a horizontal
distance of 21 meters from the building. The angle of elevation from her eyes to the roof (point A) is 27°,
and the angle of elevation from her eyes to the top of the antenna (point B) is 37°. If her eyes are 1.54
meters from the ground, find the height of the antenna (the distance from point A to point B). Round your
answer to the nearest tenth of a meter if necessary.