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A tower subtends an angle alpha at a po...

A tower subtends an angle `alpha` at a point in the plane of its base and the angle of depression of the foot of the tower at a point b ft. just above A is `beta`. Then , height of the tower is

A

b tan `alphacotbeta`

B

`bcotalphatanbeta`

C

`btanalphatanbeta`

D

`bcotalpha cotbeta`

Text Solution

Verified by Experts

The correct Answer is:
A
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