1.

A tower subtends an angle alpha at a point A on the same level as the foot of the tower B is a point vertically above A and AB = h metres. The angle of depression of the foot of the tower from B is beta. The height of the tower is

Answer»

`H tan ALPHA COT beta`
`h tan alpha tan beta`
`h cot alpha cot beta`
`h cot alpha tan beta`

ANSWER :A


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