1.

A verrical pole subtends an angle tan^(-1)"1/2 at a points P on the ground. The angle subtended by the upper half the pole at P is

Answer»

`tan^(-1).(1)/(4)`
`tan^(-1).(1)/(8)`
`tan^(-1).(2)/(3)`
`tan^(-1).(2)/(9)`

Answer :D


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