How far from a wall is a 20 m long ladder, leading against wall forming a 60° angle with it?
Answer: 10 m
Explanation
To find the distance of the ladder from the wall, we can use trigonometry.
Let's denote the distance from the wall as 'x'. Since the ladder forms a 60° angle with the wall, we can use the cosine function:
cos(60°) = x / 20
We know that cos(60°) = 0.5, so:
0.5 = x / 20
x = 20 × 0.5
x = 10 m
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