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It is found that on walking x metres ...

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 `30o` to `60o` . The height of the chimney is `3sqrt(2)x` (b) `2sqrt(3)x` (c) `(sqrt(3))/2x` (d) `2/(sqrt(3))x`

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RD SHARMA-SOME APPLICATIONS OF TRIGONOMETRY-All Questions
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