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From the top of a hill h metre high, the...

From the top of a hill h metre high, the angles of depressions of the top and the bottom of a pillar are `alpha and beta`, respectively. The height (in metres) of the pillar is

A

`(h(tanbeta-tan alpha))/(tanbeta)`

B

`(h(tanbeta-tan alpha))/(tanalpha)`

C

`(h(tanbeta+tan alpha))/(tanbeta)`

D

`(h(tanbeta+tan alpha))/(tanalpha)`

Text Solution

Verified by Experts

The correct Answer is:
B
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