The shadow of a tower is 60 m when the sun's altitude is 30°. When the sun's altitude is 60°, the length of the shadow is
Q1. The shadow of a tower is 60 m when the sun's altitude is 30°. When the sun's altitude is 60°, the length of the shadow is
Answer: 20 m
Explanation: Using the relation between the tower height and shadow length at different sun altitudes, we derive the new shadow length.