1.

A vertical tower stands on a declivity which is inclinde at 15^(@) to the horizon. From the foot of the tower a man ascends the declivity from 80 feet and then finds that the towersubteds an angle of 30^(@). The height of the tower is

Answer»

`40(sqrt6+sqrt2)`
`20(sqrt6-sqrt2)`
`40(sqrt6-sqrt2)`
`10(sqrt6-sqrt2)`

ANSWER :C


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