An observer of 1.6m tall is 20sqrt3 away...

An observer of 1.6m tall is `20sqrt3` away from a tower. The angle of elevation, from his eyes to the top of the tower is `30^@`. The heights of the tower is_____

24.7 m

23.2 m

21.6 metre

none of these.

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UNITED BOOK HOUSE-Application of Trigonnometric Ratios : Heights of Distance-Exercise

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