Answer:
HI = 54.1 ft
Explanation:
From the diagram, we can see that the length HI is the opposite as it faces the angle given
The side that measures 60 ft is the adjacent
GH represents the hypotenuse
Mathematically, the ratio of the opposite and the adjacent is the tan of an angle
Tan 31 = HI/60
HI = 60 * Tan 31
HI = 54.1 ft