Answer:
86.6 feet
Step-by-step explanation:
this could be represent as a triangle (as shown in the image)
The red rectangle is the building
the green person is Amari
So we use the (soh cah toa) to solve this
and specifically the (toa) which mean tan=opposite/adjacent
the opposite is the side that been directly in the opposite of the angle and in this case is equal to the tall of the building
the adjacent is the side that near the angle (and not the hypotenuse) and in this case is equal 50 feet
tan60 = opposite/50
tan60 = opposite/50
√3 = opposite/50
opposite = 50√3
opposite = 86.6 feet
the tall of the building = 86.6 feet