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MCQ
A ladder 5 m long leans against a wall, making an angle of 60 degrees with the ground. How high up the wall does the ladder reach?
Unit-6 Trigonometry and Bearing
A 5/2 m
B 5 sqrt 3 m
C 5 sqrt 3 / 2 m
D 5 m
Explanation

sin 60 = height / 5, so height = 5 sin 60 = 5 sqrt 3 / 2 m.

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