 Ex. 2. From the edge of a ditch 18 feet wide, surrounding a fort, the angle of elevation of the wall was found to be 62° 40'. Required the height of the wall, and the length of a ladder necessary to reach from my station to the top of it. Ans.  Elements of Plane Trigonometry - Página 46por William Smyth - 1834 - 72 páginasVista completa - Acerca de este libro
 | Samuel Webber - 1808 - 520 páginas
...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... | |
 | John D. Williams - 1840 - 634 páginas
...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 the length of a shore, which being to strut 11 feet... | |
 | William Smyth - 1855 - 234 páginas
...distance from the object ? Ans. 218.26 feet. 3. A ladder 193.55 feet long is placed against a wall in an oblique position, and reaches to a point 75.83 feet...reach and how far distant from the wall is its foot ? 6. A person attempts to swim across a river, whose breadth is 829 yards. How far from the place immediately... | |
 | Elias Loomis - 1855 - 192 páginas
...edge of a ditch 18 feet wide, surrounding a fort, the angle of elevation of the wall was found to be 62° 40'. Required the height of the wall, and the...necessary to reach from my station to the top of it. Am. The height is 34.82 feet. Length of ladder, 39.20 feet. PROBLEM II. (144.) To find the distance... | |
 | Elias Loomis - 1859 - 218 páginas
...edge of a ditch 18 feet wide, surrounding a fort, the angle of elevation of the wall was found to be 62° 40'. Required the height of the wall, and the...necessary to reach from my station to the top of it. Ans. The height is 34.82 feet. Length of ladder, 39.20 feet. PROBLEM II. (144.) To find the distance of... | |
 | Elias Loomis - 1859 - 372 páginas
...edge of a ditch 18 feet wide, surrounding a fort, the angle of elevation of the wall was found to be 62° 40'. Required the height of the wall, and the...necessary to reach from my station to the top of it. Ans. The height is 34.82 feet. Length of ladder, 39.20 feet. PROBLEM II. (144.) To find the distance of... | |
 | Edward Butler (A.M.) - 1862 - 154 páginas
...wide, surrounding a fort, I took the angle of elevation of the top of the wall, and found it to be 62° 40'. Required the height of the wall, and the...necessary to reach from my station to the top of it. 2. From the top of a tower whose height was 120 feet, I took the angle of depression of two trees that... | |
 | Elias Loomis - 1886 - 436 páginas
...edge of a ditch 18 feet wide, surrounding a fort, the angle of elevation of the wall was found to be 62° 40'. Required the height of the wall, and the...necessary to reach from my station to the top of it. Ane. The height is 34.82 feet. Length of ladder, 39.20 feet. PROBLEM II. 162. To find the distance... | |
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