NCERT Exercise 9.1 - Q6 - Some Applications of Trigonometry
Question: A 1.5 m tall boy is standing at some distance from a 30 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: The distance walked is 19sqrt(3) m.
Full step-by-step NCERT solution with diagrams on Something by Zero.