1.

A straight pole A subtend a right angle at a point B of another pole at a distance of 30 metres from A the top of A being 60^(@) above the horizontal line joining the point B to the pole A. The length of the pole A is in metres.

Answer»

`20sqrt(3)`
`40sqrt(3)`
`60sqrt(3)`
`(40)/(SQRT(3))`

ANSWER :B


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