The shadow of a tower standing on level ground is found to be 40 m longer when the Sun’s altitude is 30° than when it was 60°. The height of the tower is
A. 40√3 m
B. 20√3
C. 20 m
D. 15√3 m
Answer:B
The shadow of a tower standing on level ground is found to be 40 m longer when the Sun’s altitude is 30° than when it was 60°. The height of the tower is
A. 40√3 m B. 20√3 C. 20 m D. 15√3 m
Explanation: When the sun’s altitude is the angle of elevation of the top of the tower from the tip of the shadow.