Q34 of 14 Page 1

The angle of elevation of top of a vertical tower from a point on the ground is 60⁰. From another point 10 m vertically above the first, it’s angle of elevation is 30⁰. Find the height of the tower.



Let, h + 10 be the height of the tower.


In ∆ ABC


…(1)


In ∆ ADE


…(2)


From eq.(1) and eq.(2)


3h = h + 10 ⇒ h = 5 m


So, the height of tower is 15 m


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