A vertical tower stands on a declivity w...

A vertical tower stands on a declivity which is inclined at `15^(@)` to the horizontal. From the foot of the tower, a man ascends the declivity for 80 feet and then finds that the tower subtends an angle of `30^(@)`. The height of the tower is

`20(sqrt6-sqrt2)`

`40(sqrt6-sqrt2)`

`40(sqrt6+sqrt2)`

none of these

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OBJECTIVE RD SHARMA ENGLISH-HEIGHTS AND DISTANCES-Exercise

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