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MCQ
A lighthouse is 100 m tall. From a boat, the angle of elevation of its top is 30 degrees. How far is the boat from the base of the lighthouse?
Unit-6 Trigonometry and Bearing
A 100 / sqrt 3 m
B 100 m
C 50 m
D 100 sqrt 3 m
Explanation

tan 30 = 100 / d, so d = 100 / (1 / sqrt 3) = 100 sqrt 3 m.

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