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As observed from the top of a 75m high l...

As observed from the top of a 75m high lighthouse from the sea-level, the angles of depression of two ships are `30^(@)` and `45^(@)` . If one ship is exactly behind the other on the same side of the lighthouse, find the distance between the two ships.

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The correct Answer is:
`y = 75 (sqrt(3) - 1) ` metres
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