A lighthouse is 45 m high

MATHEMATICS · Subjective · CBSE · Mathematics · Applications of Trigonometry · Applications of Trigonometry

Problem

A lighthouse is 45 m high. From the decks of two boats lying along the same straight line with the lighthouse, the angles of depression of the top of the lighthouse are 30∘30^\circ and 20∘20^\circ respectively. Calculate the distance between the two boats.

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