 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...  Elements of Plane and Spherical Trigonometry - Pàgina 69per Olinthus Gregory - 1816 - 244 pàginesVisualització completa - Sobre aquest llibre
 | Adrien Marie Legendre - 1852 - 436 pàgines
...that, CB = 672 yards, CA = 588 yards, A OB = 55° 40'; required the distance AB. Ans. 592.967 yards. 3. Being on a horizontal plane, and wanting to ascertain...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... | |
 | Charles Davies - 1854 - 436 pàgines
...it was found that, CB = 672 yards, CA = 588 yards, required the distance AB. Ans. 592.967 yards. 3. Being on a horizontal plane, and wanting to ascertain...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... | |
 | Charles Davies - 1854 - 446 pàgines
...it was found that, OB = 672 yards, CA =588 yards, required the distance AB. Ans. 592.967 yards. 3. Being on a horizontal plane, and wanting to ascertain...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... | |
 | War office - 1858 - 578 pàgines
...— ti\ , A — bs — c 10. Being on a horizontal plane, and wanting to find the height of a tower on the top of an inaccessible hill, I took the angle of elevation of the tower 61°, and of the top of the hill 40°, then measuring in a line directly from the tower to the... | |
 | Edward Butler (A.M.) - 1862 - 154 pàgines
...the mark from its bottom. 4. Being on 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, 40°, aud of the top of the object, 51° ; measuring then in a direct line from it to the distance of 100... | |
 | Charles Davies, Adrien Marie Legendre - 1869 - 470 pàgines
...feet and 672 feet, and their included angle 55° 40'. Required the distance AB. Ans. 592.967 ft. 5. Being on a horizontal plane, and wanting to ascertain...• the height of a tower, standing on the top of an inaccessiblehill, there were measured, the angle of elevation of the top of the hill 40°, and of the... | |
 | Charles Davies - 1870 - 392 pàgines
...В = 672 yards С А — 588 yards ACB = 55° 40'; required the distance AB. Ans. 592.067 yards. 3. Being on a horizontal plane, and wanting to ascertain...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... | |
 | Charles Davies - 1872 - 464 pàgines
...feet and 672 feet, and their included angle 55° 40'. Required the distance AB. Ans. 592.967 ft. - 5. Being on a horizontal plane, and .wanting to ascertain...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... | |
 | Henry W. Jeans - 1873 - 272 pàgines
...angle above the ground. Ans. 41-48 feet. [22]. (Fig. 25.) To determine the height of an object, EB, on the top of an inaccessible hill, I took the angle of elevation, ACE, of the top of the hill=40°, and also that of the top of the object ACB=51°. Going then 100 yards... | |
 | Henry William Jeans - 1873 - 292 pàgines
...angle above the ground. Ans. 41-48 feet. [22]. (Fig. 25.) To determine the height of an object, EB, on the ' top of an inaccessible hill, I took the angle of elevation, ACE, of the top of the hill=40°, and also that of the top of the object ACB=51°. Going then 100 yards... | |
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