Answer:
52.88 degrees
Explanation:
To find the angle of elevation, we just need to use the tangent relation of the angle, as this relation is expressed as the division of the opposite side (that is, the height of the tree) by the adjacent side (that is, the length of the shadow), so we have that:
tangent(angle) = 37/28 = 1.3214
angle = arc tangent (1.3214) = 52.88 degrees