trigonometry help with one question

Question

A 132-foot antenna is on top of a tall building. From a point on the ground, the angle of elevation to the top of the antenna is 28.5°, while the angle of elevation to the bottom of the antenna from the same point is 21.5°. How tall is the building?

Answer 1

(h + 132)/tan28.5° = h/tan21.5°; h(1/tan21.5° - 1/tan28.5°) = 132/tan28.5°; h = 132/(tan28.5°/tan21.5° - 1) =

348.86 foot

Answer 2

Answer 3