alleryA 10 m ladder on level ground against a vertical wall changes inclination 60° to 45°. Foot moves out by?
A5(√3−1) m
B5 m
C5(√2−1) m
D5√2 m
Answer & Solution
Correct answer: C. 5(√2−1) m
The horizontal reaches change from 5 m to 5√2 m, a difference of 5(√2 − 1) m.
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