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Bøker Bok 110 av 31Being on a horizontal plane, and wanting to ascertain the height of a tower, standing...
" 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: With Their Applications to ... - Side 69
av Olinthus Gregory - 1816 - 244 sider
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Mathematics: Compiled from the Best Authors and Intended to be the ..., Volum 2

1801 - 426 sider
...horizontal plane, and wanting to know the height of an object on the top of an inaccessible hill j I took the angle of elevation of the top of the hill equal 40", and of the top of the object equal 51° ; then, going in a direct line from it to the distance...
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A Treatise on Plane and Spherical Trigonometry: With Their Most Useful ...

John Bonnycastle - 1806 - 419 sider
...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,...
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Mathematics, Volum 2

Samuel Webber - 1808
...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...
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Elements of Surveying

Charles Davies - 1830 - 300 sider
...CB=672, and also, the contained angle ACB=55° 40'. Required the distance AB. Ans. 593.8. Example 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...
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A Course of Mathematics: For the Use of Academies, as Well as ..., Volum 1

Charles Hutton - 1831
...distance 192-15 Exam. xiv. Reing 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...elevation of the top of the hill 40", and of the top of ib.3 tower 51° ; the measuring in a line direcily from it to the distance of 200 feet farther, I found...
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Mathematics for Practical Men: Being a Common-place Book of Principles ...

Olinthus Gregory - 1834 - 427 sider
...с в D, by means of the relation between sides and the sines of their opposite angles. EXAMPLE VI. Being on a horizontal plane, and wanting to ascertain...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...
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Mathematical and Astronomical Tables: For the Use of Students in Mathematics ...

William Galbraith - 1834 - 428 sider
...the tower ? Ans — 46.666 feet. EXAMPLE XIV. In order to know the height of a castle standing on a hill, I took the angle of elevation of the top of the castle above the horizontal plane 58°, and of the top of the hill 33° ; but could not, as in last...
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Elements of Geometry and Trigonometry

Adrien Marie Legendre - 1836 - 359 sider
...=672 feet, and also the contained angle ACB=55° 40': required the distance AB. Ans. 592.967 feet. 6. 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...
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Elements of Surveying: Including a Description of the Instruments and the ...

1837 - 249 sider
...ACE: it was found that = 6l-2 yards C^3=588 yaida 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...
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Elements of Surveying: With a Description of the Instruments and the ...

Charles Davies - 1839 - 261 sider
...HEIGHTS AND DISTANCES. CZ? = 672 yards CA—588 yards required the distance AB. Ana. 599.967 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...
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