- A20(√3 + 1) m
- B20(√3 − 1) m
- C20√3 m
- D10(√3 − 1) m
Step-by-Step Solution
The 45° sight line gives distance 20 m. Top of flagstaff: . Flagstaff m.
Answer: B) 20(√3 − 1) m
A flagstaff stands on top of a 20 m high building. From a point on the ground, the angles of elevation of the bottom and the top of the flagstaff are 45° and 60°. Find the length of the flagstaff.
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