A television antenna is on the roof of a building. From a point on the ground 36.0 ft from the building the angle of elevation of the top and bottom of the antenna are 51° 23' & 42°10', respectively. How tall is the antenna?

Answer 1

antenna height = h from roof up
building height = b
tan 42 10 = b/36 solve for b
then
tan 51 23 = (b+h) / 36