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The angle of elevation of the top of a t...

The angle of elevation of the top of a tower at a point A due south of the tower is `alpha` and at `beta` due east of the tower is `beta`. If AB=d, then height of the tower is

A

`d/(sqrt(tan^2alpha-tan^2beta))`

B

`d/(sqrt(tan^2alpha+tan^2beta))`

C

`d/(sqrt(cot^2alpha+cot^2beta))`

D

`d/(sqrt(cot^2alpha-cot^2beta))`

Text Solution

Verified by Experts

The correct Answer is:
C
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