If the angle of elevation of a cloud ...

If the angle of elevation of a cloud from a point 200 m above a lake is `30o` and the angle of depression of its reflection in the lake is `60o` , then the height of the cloud above the lake, is (a) 200 m (b) 500 m (c) 30 m (d) 400 m

100m

200m

300m

400m

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