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Deepak Bora
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Asked: 2020-07-30T22:32:26+05:30 In:

In the given figure, the angle of elevation of the top of a tower from a point C on the ground, which is 30 m away from the foot of the tower, is 30°. Find the height of the tower.

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In the given figure, the angle of elevation of the top of a tower from a point C on the ground, which is 30 m away from the foot of the tower, is 30°. Find the height of the tower.

CBSE 10th Class Mathematics
Past year question paper
Year 2020
SET 1, Code Number  – 30/5/1
Question Number –  16
Trigonometric function Sin, cos and tan
trigonometric relation

cbse class 10thlast year paperncert class 10th
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    1 Answer

    1. Newbie

      Use tan θ = opposite side / adjacent side

      here,

      tan θ = AB/30

      AB = Height of the tower

      tan 30° × 30= AB

      AB = [1/√3] ×  30

      AB = 10√3 m

      ∴ Height of the tower is 10√3 m

       

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