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" From the edge of a ditch 18 feet wide, surrounding a fort, I took the angle of elevation of the top of the wall and found it 62° 40... "
Elements of Plane Trigonometry: With Its Application to Mensuration of ... - Page 58
by William Smyth - 1852 - 176 pages
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A Treatise on Mensuration, Both in Theory and Practice

Charles Hutton - Measurement - 1788 - 728 pages
...wide, furrounding a fort, I took the angle of elevation of the top of the wall, and found it 62° 40' : required the height of the wall, and the length of a ladder neceflary to reach from my ftation to the top of it. Firft,As i : i -934702 (tan.62°4o') : : 18 :...
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Mathematics: Compiled from the Best Authors and Intended to be the ..., Volume 2

Mathematics - 1801 - 658 pages
...surrounding a. fort, I took the angle of elevation of the top of the. wall, and found it 62" 40' ; required the height of the wall, and the length of a ladder necessary to rcnch from my station to the top of it. As radius 90° : tangent of ,62° 40' :: BA 18 : BC 34-8246...
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A Course of Mathematics in Two Volumes for the Use of Academies as Well as ...

Charles Hutton - Mathematics - 1807 - 464 pages
...surrounding a fort, having taken the angle of elevation of the top of the wall, it was found to be 62° 40' : required the height of the wall, and the length of a ladder to reach from my station to the top of it? AC height of wall 69'64, Ans> Bladder, 78 -4 feet. EXAM....
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Mathematics: Compiled from the Best Authors, and Intended to be ..., Volume 2

Samuel Webber - Mathematics - 1808 - 520 pages
...wide, surrounding a fort, I took the angle of elevation of the top of the wall, and found it 62° 4O' ; required the height of the wall, and the length of a ladder necessary to reach from my station t« the top 01 it. As radius 90° : tangent of 62° 40 : :BA 18 : BC 34*8246 feet lO'OOOOOOO 10'2866141...
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A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - Mathematics - 1811 - 442 pages
...surrounding a fort, having taken the angle of elevation of the top of the wall, it was found to be 62° 40' : required the height of the wall, and the length of a ladder to reach from my station to the top of it? A / ne'8nt °f wa^ 69-64, /u's'i ladder, 78-4 feet. EXAM....
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An Easy Introduction to the Mathematics: In which the Theory and ..., Volume 2

Charles Butler - Mathematics - 1814 - 528 pages
...feet long, in order to support a wall, is placed so that the angle at bottom is double the angle at top, how high up the wall does it reach, and how far distant from the wall is its foot? Ans. heigKt 9.5262S/ec<; distance 5± feet. 11. Required the altitude of the sun, when the length of a man's...
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Easy Introduction to Mathematics, Volume 2

Charles Butler - 1814 - 582 pages
...feet long, in order to support a wall, is placed so that the angle at bottom is double the angle at top, how high up the wall does it reach, and how far distant from the wall is its foot? Am. height 9.5Z(i23feet ; distance 5^- feet. 11. Required the altitude of the sun, when the length...
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A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - Mathematics - 1822 - 616 pages
...surrounding a fort, having taken the angle of elevation of the top of the wall, it was found to be 62° 40' : required the height of the wall, and the length of a ladder to reach from my station to the top of it ? . i height of wall 69-64, ns- I ladder, 78 4 feet. EXAM....
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Problems in the Different Branches of Philosophy: Adapted to the Course of ...

Miles Bland - Astronomy - 1830 - 394 pages
...it is inclined, and the distance of its lowest part from the wall. 4. If a ladder of given length be placed against a wall, so that the angle at the bottom...reach, and how far distant from the wall is its foot ? 5. Determine the altitude of the sun when the length of a man's shadow is half his height: and also...
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An Elementary Treatise on Algebra, in Theory and Practice: With Attempts to ...

John D. Williams - Algebra - 1840 - 634 pages
...surrounding a fort, having taken the angle of elevation of the top of the wall, it was found to be 62° 40' : required the height of the wall, and the length of a ladder to reach from my station to the top of it. Ans. height of wall 69.64, ladder 78.4 feet. 633. Required...
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