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A man in a boat rowing away from a light...

A man in a boat rowing away from a lighthouse 150 m high, takes2 minutes to change the angle of elevation of the top of the lighthouse from `60^(@) t o 45^(@)` . Find the speed of the boat .

A

`25(3-sqrt(3))`

B

`150(3-sqrt(3))`

C

`25(sqrt(3)-1)`

D

none of these

Text Solution

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The correct Answer is:
A
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