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[" 27) f the angle of elevation of a clo...

[" 27) f the angle of elevation of a cloud from a "],[" point "P" which is "25m" above a lake be "30^(@)],[" and the angle of depression of reflection of "],[" the cloud in the lake from "P" be "60^(@)," then "],[" the height of the cloud (in meters) from the "],[" surface of the lake is "],[[" (a) "50," (b) "60," ."]]

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