It is found that on walking x metres tow...

It is found that on walking x metres towards a chimney in a horizontal line through its base, the elevation of its top changes from `30^@` to `60^@`. The height of the chimney is____

`3sqrt2 x`

`2sqrt3 x`

`(sqrt3)/(2) x`

`(2)/(sqrt3) x`

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

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