A building stands on level ground and a vertical flagstaff is fixed on top of the building. From a point 30 m from the foot of the building, the angle of elevation of the top of the building is 30°, while the angle of elevation of the top of the flagstaff is 60°. Find the height of the flagstaff (in m). [Option A printed in the original source as a stacked 40/√3 fraction; reproduced here in linear form]

Subject: Mathematics | Topic: Trigonometry | Difficulty: MEDIUM

Options

1. (A) 40/√3
2. (B) 20√3
3. (C) 40√3
4. (D) 60√3

Verified Answer

Option (B): 20√3

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