How do I do b) in the attached file?

Answer:
≈ 81.6 m
Step-by-step explanation:
The model of the situation is a right triangle
let h be the height of the cliff
Using the tangent ratio in the right triangle
tan58° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{h}{50}[/tex] ( multiply both sides by 50 )
50 × tan58° = h
We have to add on the height her eye was above ground , then
h = 50 × tan58° + 1.6 ≈ 81.6 m ( to 1 dec. place )