From the top of a lighthouse, 100 m high, the angle of depression of a boat is \tan^{−1}(5/12). What is the distance between the boat and the lighthouse? [NDA I 2017]

UPSC NDA I 2017 Mathematics Solved Paper

Question : 56 of 120

Marks: +1, -0

From the top of a lighthouse, 100 m high, the angle of depression of a boat is tan−1(

). What is the distance between the boat and the lighthouse?

[NDA I 2017]

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