Answer:
h = 17 ft rounded to the nearest foot
Step-by-step explanation:
Consider the two triangles formed by
On the left we have Sal, the distance between Sal and the mirror and the line of sight from Sal to the mirror
On the right we have the flagpole, the distance between the flagpole and the mirror and the line of sight from the top of the flagpole to the mirror
The two triangles formed are similar since the angle of incidence(angle at which light strikes the mirror) is the same as the angle of reflection. Therefor ethat means the pair of linear angles formed on the ground has the same value, angles of the two triangles are same.
Similar angles have ratios of corresponding sides equal
That means h/5 = 21.1/6.2
h = 5 x 21.1/6.2 = 17.016 ft ≈ 17 ft
