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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... "
A Course of Mathematics: In Three Volumes : Composed for the Use of the ... - Page 23
by Charles Hutton - 1811
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Mathematics: Compiled from the Best Authors and Intended to be the ..., Volume 2

Mathematics - 1801 - 658 pages
...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 Course of Mathematics: In Two Volumes : for the Use of Academies ..., Volume 1

Charles Hutton - Mathematics - 1816 - 610 pages
...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...feet farther, I found the angle to the top of the towers to be 23« 4* '. What then is the height of the tower ? I Ans. 93.33148 feet. EXAM. xv. From...
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Elements of Plane and Spherical Trigonometry: With Their Applications to ...

Olinthus Gregory - Plane trigonometry - 1816 - 276 pages
...plane, and wanting to ascertain, the height of a tower standing on the top of an inaccessible hill, I took the angle of elevation of the top of the hill...of the top of the tower 51°, then measuring in a direct line 180 feet farther from the hill, I took in the same vertical plane the angle of elevation...
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A Course of Mathematics: In Two Volumes. For the Use of Academies ..., Volume 1

Charles Hutton - Arithmetic - 1818 - 646 pages
...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 measuring...line directly from it to the distance of 200 feet farthec, l found the angle to the top of the tower to be 23° 45'. What then is the height of the tower...
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A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - Mathematics - 1822 - 616 pages
...horizontal plane, and wanting to know the height of 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 measuring in a line directly from it to the distance of 200 feet farther, I found the angle...
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A Course of Mathematics for the Use of Academies: As Well as ..., Volume 1

Charles Hutton - Mathematics - 1825 - 608 pages
...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...directly from it to the distance of 200 feet farther, 1 found the angle to the top of the towers to be 23° 45'. What then is the height of the tower ? Ans....
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Elements of Surveying

Charles Davies - Surveying - 1830 - 390 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'...
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A Course of Mathematics: For the Use of Academies as Well as ..., Volume 1

Charles Hutton - Mathematics - 1831 - 632 pages
...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...angle to the top of the tower to be 33° 45'. What is the height of the tower ? Ans. 93-33148 feet. EXAM. xv. From a window near the bottom of a house,...
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A Course of Mathematics: For the Use of Academies as Well as ..., Volume 1

Charles Hutton - Mathematics - 1831 - 660 pages
...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 ih.; tower 51° ; the measuring in a line directly from it to the distance of 200 feet farther, I found...
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Mathematical and Astronomical Tables: For the Use of Students in Mathematics ...

William Galbraith - Astronomy - 1834 - 454 pages
...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...of the top of the tower 51° ; then measuring in a direct line 100 feet farther from the hill, I took in the same vertical plane the angle of elevation...
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