I am completely confused when it comes to this problem, I don't even know where to start. I tried just seeing how many times the bridge length goes into the building's shadow but still comes up way short. this is the problem (btw in the real life photo the bridge is 1 cm, and the buildings shadow is 4 cm):

Question

In the aerial photograph below, which was taken when the sun’s elevation was 46.733˚, estimate the height (in meters) of the tallest building in the photo given the length of the bridge over the freeway located near the tip of its shadow is 151.6 meters long.

Answer 1

the shadow is 4 times the length of the bridge

(bldg height) / shadow = tan(sun elev)

Answer 2

Did you find any help with this question?