Answer:
39.80 degrees
Step-by-step explanation:
Given that in the diagram a tree of 100 feet height casts a shadow of 120 ft long
If we consider the angle of elevation it would be the angle of the triangle which the tip of the shadow makes with horizontal along the line of tip and top of tree.
If A is the angle of elevation then in the right triangle we have
tan A = opposite/adjacent side = height of tree/length of shadow
=100/120
= 5/6
A = arc tan (5/6) = 39.80
