Q8 of 28 Page 93

From the top of a 25m high pillar the angle of elevation of the top of a tower and the angle of depression of the foot of the tower are equal then the height of the tower is


Let AD is a Pillar, BC is a Tower, Angle of depression of the base is b0, Angle of elevation is a0.


Given, a = b


in CDE,


…………..(1)


∠DBA = b (interior angle)


in DBE,


……….......(2)


In rectangle, ABED,


h = EB,


AB = DE



h = CE


Height of The Tower = CE + BE


= 50

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