Assuming That The Street Is Level

Assuming that the street is level, estimate the height of the building to the nearest foot. In order to estimate the height of a building, two students stand at a certain distance from the building at street level. From this point, they find the angle of elevation from the street to the top of the building to be 36°. From a point that is 300 feet closer to the building, the angle of elevation, again at ground level, to the top of the building is 49°.