Q. 154.2( 15 Votes )

The angles of ele

Answer :

AB is a tower. D and Care two points on the same side of a tower, BD = a and BC = b.

∠ADB and ∠ACB are the complementary angles.

If ∠ADB = x, then ∠ACB = 90 – x

In ∆ADB,

………… (1)

In ∆ABC,

…………....(2)

Multiplying (1) and (2),

(AB)² = ab

AB = √ab

Height of tower = AB = √ab

Hence proved.

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