 | Charles Hutton - 1788 - 728 pàgines
...the center of the mltrument added. EXAMPLE II. From the edge of a ditch of 1 8 feet wide, furrounding a fort, I took the angle of elevation of the top of...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 :... | |
 | 1801 - 658 pàgines
...with the height of the centre of the instrument added. . 2. From the edge of a ditch 18 feet vide, surrounding a. fort, I took the angle of elevation...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... | |
 | Charles Hutton - 1807 - 464 pàgines
...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.... | |
 | Samuel Webber - 1808 - 520 pàgines
...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... | |
 | Charles Hutton - 1811 - 442 pàgines
...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.... | |
 | Charles Hutton - 1822 - 616 pàgines
...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.... | |
 | William Smyth - 1834 - 104 pàgines
...AD 550 yards ; required the distance AE. Ans. 536.25 yards. QUESTIONS AND PROBLEMS FOR PRACTICE. t 1, A line 27 yards long will exactly reach from the...reach and how far distant from the wall is its foot ? Ans. 108.25, and 62.5 feet respectively. opposite to his departure does he arrive, if the stream... | |
 | William Smyth - 1834 - 94 pàgines
...distance from the object ? Ans. 218.26 feet. 3. A ladder 193.55 feet long is placed against a wall in »n oblique position, and reaches to a point 75.83 feet...reach and how far distant from the wall is its foot ? Ans. 108.25, and 62.5 feet respectively. 6. A person attempts to swim across a river, whose breadth... | |
 | John D. Williams - 1840 - 634 pàgines
...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... | |
 | John Radford Young - 1850 - 294 pàgines
...and which snrronnded a fort, the angle of elevation of the top of the wall was taken, and found to be 62° 40': required the height of the wall, and the length of a ladder necessary to scale it. Ans. Height of wall, 34-82 feet; and length of ladder, 39-2 feet. 5. The angle of elevation... | |
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Ans. 23° 3' 55". 4. 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... 
