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If the angle of elevation of a cloud fro...

If the angle of elevation of a cloud from a point h metres above a lake is `alpha` and the angle of depression of its reflection in the take is `beta` , prove that the height of the cloud is `(h(tanbeta+t a nalpha))/(tanbeta-t a nalpha)`

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RD SHARMA-SOME APPLICATIONS OF TRIGONOMETRY-All Questions
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