A tower subtends an angle \[\alpha \]at a point A in the plane of its base and the angle of depression of the foot of the tower at a point l meters just above A is\[\beta \]. The height of the tower is

A tower subtends an angle \[\alpha \]at a point A in the plane of its

1.	A tower subtends an angle \[\alpha \]at a point A in the plane of its base and the angle of depression of the foot of the tower at a point l meters just above A is\[\beta \]. The height of the tower is
A.	\[l\tan \beta \cot \alpha \]
B.	\[l\tan \alpha \cot \beta \]
C.	\[l\tan \alpha \tan \beta \]
D.	\[l\cot \alpha \cot \beta \]
Answer» C. \[l\tan \alpha \tan \beta \]

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A tower subtends an angle \[\alpha \]at a point A in the plane of its base and the angle of depression of the foot of the tower at a point l meters just above A is\[\beta \]. The height of the tower is

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