7. A vertical tower stands on a horizontal plane and is surmounted by a vertical flag-staff
.
At a point on the plane 70 metres away from the tower, an observer notices that the
angles of elevation of the top and the bottom of the flag-staff are respectively 60° and 45°.
Find the height of the flag-staff and that of the tower.
ICBSE 2014]
15hich is broken by the wind in such a way that its top just
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