 | Olinthus Gregory - Mathematics - 1834 - 472 pages
...wanting to ascertain the height of a tower standing on the top of an inaccessible hill, I :ook the angle of elevation of the top of the hill 40°, and...of the top of the tower 51°, then measuring in a direct line ISO feet farther from the hill, I took in the same vertical plane the angle of elevation... | |
 | Adrien Marie Legendre - Geometry - 1836 - 394 pages
...ascertain the height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and...of the top of the tower 51° : then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the top of the tower was 33°... | |
 | Charles Davies - Navigation - 1837 - 342 pages
...ascertain the height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and...of the top of the tower 51°; then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the top of the tower was 33°... | |
 | Adrien Marie Legendre - Geometry - 1837 - 376 pages
...top of an inaccessible hill, there were measured, the angle of elevation of the top oi the hill 40D, and of the top of the tower 51° : then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the top of the tower was 33°... | |
 | Adrien Marie Legendre - Geometry - 1838 - 382 pages
...standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top ol the hill 40% and of the top of the tower 51° : then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the top of the tower was 33°... | |
 | Charles Davies - Surveying - 1839 - 376 pages
...ascertain the height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and...of the top of the tower 51°; then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the top of the tower was 33°... | |
 | Charles Davies - Surveying - 1839 - 376 pages
...ascertain the height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and...of the top of the tower 51°; then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the top of the tower was 33°... | |
 | John D. Williams - Algebra - 1840 - 634 pages
...horizontal plane, and wanting to know the height qf a tower placed on the top of an inaccessible hill; I took the angle of elevation of the top of the hill 40°, C the top of the tower 51° ; then measuring in a line directly from it to the distance of 200 ft AD... | |
 | Charles Davies - Navigation - 1835 - 388 pages
...ascertain tlIe height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and...of the top of the tower 51°; then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the top of the tower was 33°... | |
 | Geometry - 1843 - 376 pages
...ascertain the height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and of the top of die tower 51° : then measuring in a direct line 180 feet farther from the hill, the angle of elevation... | |
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Being on a horizontal plane, and wanting to ascertain the height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and of the top of the tower 51° ; then measuring in a direct... 
