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A helicopter is in a stationary position...

A helicopter is in a stationary position at a certain height over the lake. At a point 200 m above the surface of the lake, the angle of elevation of the helicopter is `45^(@)`. At the same time, the angle of depression of its reflection in the lake is `75^(@)`. Calculate the height of the helicopter from the surface of the lake :

A

`(200)/sqrt3` m

B

`200sqrt3` m

C

200 m

D

150 m

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The correct Answer is:
B
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