Trigonometryeasy · Past Paper
A ladder 20 m long leans against a wall at 60°. Distance of foot from wall?
A10 m
B10√3 m
C20 m
D5 m
✓ Correct Answer: A — 10 m
cos 60° = d / 20. 1/2 = d / 20, so d = 10 m.
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