1.

A vertical pole subtends an angle Tan^-1(1/2) at a point P on the ground. IF the angles subtended by the upper half and the lower half of the pole at P are respectively alpha and beta, then (tan alpha , tan beta)=

Answer»

`(1/4,1/5)`
`(1/5,2/9)`
`(2/9,1/4)`
`(1/4,2/9)`

ANSWER :B


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