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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... "
Elements of Geometry and Trigonometry: With Applications in Mensuration - Page 209
by Charles Davies - 1886 - 324 pages
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The Elements of Plane Trigonometry

James Hann - Plane trigonometry - 1854 - 136 pages
...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 distance of 200 feet farther, I found the angle at the top of the tower...
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Elements of Geometry and Trigonometry: From the Works of A.M. Legendre

Adrien Marie Legendre - Geometry - 1857 - 444 pages
...it was found that, CB = 672 yards, CA -=588 yards, required the distance AB. Ans. 592.967 y:u\k 8. Being on a horizontal plane, and wanting to ascertain...hill, the angle of elevation of the top of the tower waf 33 45' ; required the height of the tower. Ana. 83.998. 4. Wanting to know the hori• jsontal...
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Mathematics for Practical Men: Being a Common-place Book of Principles ...

Olinthus Gregory - 1863 - 482 pages
...triangle c BD, 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 took 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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Elements of Surveying and Navigation: With Descriptions of the Instruments ...

Charles Davies - Navigation - 1866 - 422 pages
...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...top of the hill 40, and of the top of the tower 5Г ; then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the...
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Elements of Geometry and Trigonometry

C. Davies - 1867 - 342 pages
...and also the included angle A CB : it was found that CB — 072 yards CA = 588 yards ACE = 55 40'; required the distance ABAns 592-967 yards3 Being on...angle of elevation of the top of the tower was 33 45' ; required tha height of the towerTRIGONOMETRYApplications 4 Wanting to know the horizontal distance...
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Elements of Geometry and Trigonometry from the Works of A.M. Legendre ...

Charles Davies, Adrien Marie Legendre - Geometry - 1869 - 472 pages
...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...
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Elements of Geometry and Trigonometry: With Applications in Mensuration

Charles Davies - Geometry - 1870 - 398 pages
...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...angle of elevation of the top of the tower was 33 45'; required the height of the tower. Ans. 83.998 feet. Applications. 4. Wanting to know the horizonD...
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Elements of Geometry and Trigonometry

Adrien Marie Legendre - Geometry - 1871 - 492 pages
...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...measuring in a direct line 180 feet farther from the hill, thf angle of elevation of the top of the tower was 33 45' ; required the height of the tower. Ans....
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Elements of Surveying and Leveling; with Descriptions of the Instruments ...

Charles Davies - 1871 - 458 pages
...40'; required the distance AB. Ans. 592.967 yards. ELEMENTS OF SURVEYING. [BOOK n. Ans. 939.634 yards. hill, there were measured, the angle of elevation...angle of elevation of the top of the tower was 33 45': required the height of the tower. Ans. 83.998. 4. Wanting to know the horizontal distance between...
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Elements of Geometry and Trigonometry from the Works of A.M. Legendre ...

Charles Davies - Geometry - 1872 - 464 pages
...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...measuring in a direct line 180 feet farther from the bill, the of elevation of the top of the tower was 33 45'; required the height of the tower. Ans....
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