1.

A lamppost stands in the centre of a circular garden and makes angle alpha at point A and B on the boundary where AB subtends an angle 2 beta at the foot of the lamppost. If gamma is the angle which the lamppost subtends at C, the middle point of the line joining A and B, then tan gamma =

Answer»

`TAN alpha tan beta`
`sec alpha tan beta`
`tan alpha sec beta`
NONE of these

ANSWER :C


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