A 1.8 m tall man is standing at some distance from a 31.8 m tall building. The angle of elevation from his eyes to the top of the building increases from 30° to 60° as he walks towards the building. Find the distance he walked towards the building.
Q1. A 1.8 m tall man is standing at some distance from a 31.8 m tall building. The angle of elevation from his eyes to the top of the building increases from 30° to 60° as he walks towards the building. Find the distance he walked towards the building.
Answer: 57.6 / √3 m
Explanation: Using trigonometric ratios, initial distance = 30√3 m, final distance = 30 / √3 m, distance walked = 30√3 - 30 / √3 = 57.6 / √3 m.