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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 lake is `alpha` and the angle of depression of its reflection in the lake be `beta`, prove that the distance of the cloud from the point of observation is `(2 h sec alpha)/(tan beta - tan alpha)`

A

`(2h sec x)/(tan y + tan x)`

B

`(2h cos x)/(tan x + tan y)`

C

`(2h cot x)/(tan y + tan x)`

D

`(2h sec x)/(tan y - tan x)`

Text Solution

Verified by Experts

The correct Answer is:
D
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