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