Q. 154.0( 5 Votes )

A tower subtends an angle of 30° at a point on the same level as its foot. At a second point h metres above the first, the depression of the foot of the tower is 60°. The height of the tower is




Answer :

Let the AB be the height be the tower

Let D be the point where the tower subtends angle of 30°

Let C be the point where such that CD = h meters. From C the angle of depression subtended at the foot of the tower is 60°


tan 60° =

BD = h cot 60°

BD = …………….1


tan 30° = AB/ BD

= AB / BD

AB = ×

AB = m

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