A lighthouse is 60 m high

MATHEMATICS · Single correct · CBSE · Mathematics · Applications of Trigonometry · Applications of Trigonometry

Problem

A lighthouse is 60 m high. The angle of depression of a boat on the sea is 15∘15^{\circ}. Find the horizontal distance of the boat from the foot of the lighthouse. (Take tan⁡15∘=0.268\tan 15^{\circ}=0.268.) (a) 210  m210\;\text{m} (b) 16  m16\;\text{m} (c) 224  m224\;\text{m} (d) 232  m232\;\text{m}

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