angle of elevation question?

T

tiero416

New member
A vertical building stands on a street that slopes downward at an angle of 8 degrees. At a point 120 feet from the base of the building, the angle of elevation of the top of the building is 59 degrees. What is the height of the building?

how would I do this? Can someone please help me?
 
Denote the top of the building by A, the bottom be B and the point where elevation is considered by C. Then, triangle ABC has one side 120 and two angles 59,98 and 23 degrees.
h/sin59 = 120/Sin23
h = 120Sin59/Sin23 = 263.25'

OK?
 
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