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The top of a hill observed from the top ...

The top of a hill observed from the top and bottom of a building of height h is at angles of elevation `alpha and beta.` respectively. The height of the bill is

A

`(hcotbeta)/(cotbeta-cotalpha)`

B

`(hcotalpha)/(cotalpha-cotbeta)`

C

`(htanalpha)/(tanalpha-tanbeta)`

D

None

Text Solution

Verified by Experts

The correct Answer is:
B
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