- A10√3 m
- B10 m
- C20√3 m
- D40/√3 m
Step-by-Step Solution
h = 20 sin 60° = 20 × √3/2 = 10√3 m. (10 m is the distance of the foot from the wall.)
Answer: A) 10√3 m
A 20 m ladder leans against a vertical wall and makes 60° with the ground. How high up the wall does it reach?
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