 Being on a horizontal plane, and wanting to know the height of a tower placed on the top of an inaccessible hill : I took the angle of elevation of the top of the hill 40°, and of the top of the tower 51°; then measuring in a line directly from it to...  The Elements of Plane Trigonometry - Page 95by James Hann - 1854 - 119 pagesFull view - About this book
 | John Bonnycastle - Trigonometry - 1806 - 464 pages
...10. Being at the station A, on an horizontal plane, and wanting to know the height of a tower c D, placed on the top of an inaccessible hill, I took the angle of elevation DAE, of the top of the hill, equal to 4O°, and of the top of the tower c AE equal to 51° ; then,... | |
 | Samuel Webber - Mathematics - 1808 - 520 pages
...inaccessible elevation. EXAMPLE. Being upon a horizontal plane, and wanting to know the height of an object on the top of an inaccessible hill ; I took the angle of elevation of the top of the hill equal 4O°, and of the top of the object equal 51° ; then, going in a direct line from it to the distance... | |
 | Charles Hutton - Mathematics - 1811 - 494 pages
...and my distance from it at the first station? A f height 307-53 •'""'- I distance 192-15 EXAM. xiv. Being on a horizontal plane, and wanting to know the...height of a tower placed on the top of an inaccessible hilj ; I took the angle of elevation of the top of the hill 40°, and of the top of the tower 51°;... | |
 | Charles Hutton - Arithmetic - 1818 - 646 pages
...and mv distance from it at the first station ? . " ( height 307-63 *' $ distance 192-15 EXAM. xiv. Being on a horizontal plane, and wanting to know the...a tower placed on the top of an inaccessible hill ; 1 took the angle of elevation of the top of the bill 40°, and of the top of the tower 51° ; then... | |
 | Charles Hutton - Mathematics - 1822 - 616 pages
...and my distance from it at the first station ? . . ( height 307-53 $ distance 192-15 » EXAM. xiv. Being on a horizontal plane, and wanting to know the...a tower placed on the top of an inaccessible hill . ( took the angle of elevation of the top of the hill 40°, and of the top of the tower 61°; then... | |
 | Charles Hutton - Mathematics - 1825 - 608 pages
...my distance from it at the first station ? . ( height 307-53 . . ns' £ distance 192' 16 EXAM xiv. Being on a horizontal plane, and wanting to know the...height of a tower placed on the top of an inaccessible bill ; I took the angle of elevation at the top of the hill 40°, and of the top of the tower 51°;... | |
 | William Galbraith - Astronomy - 1827 - 412 pages
...5 1.86 feet the height of the obelisk, and 83.51 above the last place of observation. EXAMPLE XIII. Being on a horizontal plane, and wanting to know the height of a tower on the top of an inaccessible hill, I took the angle of elevation of the top of the hill 40°, and... | |
 | John Farrar - Trigonometry - 1833 - 276 pages
...AD. Answer, GD = 210, 44 feet, and AD = 250, 79 feet. Fig. 39. 61. Being at the station A (fig. 39) on a horizontal plane, and wanting to know the height of a tower CD, placed on the top of a hill, we take the angle of elevation DAE of the top of the hill equal to... | |
 | John Farrar - Trigonometry - 1833 - 274 pages
...AD. Answer, GD = 210, 44 feet, and AD = 250, 79 feet. Fig. 39. 61. Being at the station A (fig. 39) on a horizontal plane, and wanting to know the height of a tower CD, placed on the top of a hill, we take the angle of elevation DAE of the top of the hill equal to... | |
 | William Galbraith - Astronomy - 1834 - 454 pages
...obelisk, the bottom is 33.58 feet, and the top is 85.44 above the last place of observation. EXAMPLE XIII. Being on a horizontal plane, and wanting to know the height of a tower on the top of an inaccessible hill, I took the angle of elevation of the top of the hill 40°, and... | |
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