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On the top of a hemispherical dome of radius rr.
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PQ = h is a pole standing on the top of hemispherical dome of radius r. the elevation of top Q as seen from A is .
...(3)
On walking AB = d, the top is just-visible from B which means that BQ is a tangent touching at R say, OR is normal. Also (given) and .
The angle which are clearly have been marked.
and
Hence from right angled we have
or
or ...(2)
From (1) by (2)
...(3)
. by (2) and (3)
...(3)
On walking AB = d, the top is just-visible from B which means that BQ is a tangent touching at R say, OR is normal. Also (given) and .
The angle which are clearly have been marked.
and
Hence from right angled we have
or
or ...(2)
From (1) by (2)
...(3)
. by (2) and (3)
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Question Text | On the top of a hemispherical dome of radius rr. |
Answer Type | Text solution:1 |
Upvotes | 150 |