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The angles of elevation of a cliff at a ...

The angles of elevation of a cliff at a point A on the ground and a point B, 100 m vertically above A are `alpha and beta` respectively. The height of the cliff is

A

`(100 cot alpha)/(cot alpha-cot beta)`

B

`(100 cot beta)/(cot alpha - cot beta)`

C

`(100 cot beta)/(cot beta - cot alpha)`

D

`(100 cot beta)/(cot beta + cot alpha)`

Text Solution

Verified by Experts

The correct Answer is:
C
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