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" The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c. "
The Element of Geometry - Seite 90
von John Playfair - 1836 - 114 Seiten
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A System of Natural Philosophy, in which the Principles of Mechanics ...

John Lee Comstock - 1835 - 308 Seiten
...neai the star a. Each of the 12 signs of the zodiac is divided into 30 smaller parts, called degrees; each degree into 60 equal parts, called minutes, and each minute into (50 parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign...
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Elements of Geometry and Trigonometry

Adrien Marie Legendre - 1836 - 394 Seiten
...trigonometrical calculation, the cir cumference of the circle is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ;...and each minute into 60 equal parts, called seconds. The semicircumference, or the measure of two right angles, contains 180 degrees ; the quarter of the...
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The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in ...

William Grier - 1836 - 384 Seiten
...stands at the angular point is read in the middle. Thus DAE. 57. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; and each degree into 60 minutes, each minute into 60 seconds, and so on. Hence a semicircle contains 180 degrees, and a quadrant...
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A System of Natural Philosophy: In which the Principles of Mechanics ...

John Lee Comstock - 1836 - 308 Seiten
...appears to move Each of the 12 signs of the zodiac is divided (nto 30 smaller parts, called degrees; each degree into 60 equal parts, called minutes, and each minute into BO parts, called seconds.) The division of the zodiac into signs, is of very ancient date, each sign...
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Elements of Surveying: Including a Description of the Instruments and the ...

Charles Davies - 1837 - 342 Seiten
...trigonometrical calculations, the circumference of the circle is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ;...and each minute into 60 equal parts, called seconds. As the circumference of a circle may be regarded as a proper measure of angles, having their vertices...
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A Treatise on Astronomy: Illustrated with Maps and Plates

Mrs. L. H. Tyler - 1837 - 302 Seiten
...from the smallest to the largest, is conceived to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. These divisions are usually expressed by signs : thus, 15° 10' 15" signifies five degrees, ten minutes,...
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A Treatise on Mensuration for the Use of Schools

Commissioners of National Education in Ireland - 1837 - 290 Seiten
...circumference pf every circle is generally divided into 360 equal parts, called degrees ; and every degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. The angles are measured by the number of degrees contained in the arcs which subtend them ; thus, if...
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Arithmetic and Its Applications: Designed as a Text Book for Common Schools ...

Dana Pond Colburn - 1856 - 392 Seiten
...Inrge or small, is supposed to be divided into 360 equal pwts called degrees. Each degree is divided into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds. (y.) A degree is to be regarded simply as the 360th part of the circumference of the circle considered....
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Arithmetic on the Productive System: Accompanied by a Key and Cubical Blocks

Roswell Chamberlain Smith - 1856 - 334 Seiten
...degrees, the whole circle of the Zodiac.7 75. Every circle, whether the greatest or least possible, is divided into 360 equal parts, called degrees, and each degree into 60 equal 1 PLANET, from planao, G. to wander, means a celestial (4) body, which revolvea about the sun or other...
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The First Book of Arithmetic

Dana Pond Colburn - 1856 - 194 Seiten
...small, is supposed to contain 360 equal parts, called degrees. Each degree is divided into 60 eqnal parts, called minutes, and each minute into 60 equal parts, called seconds. A degree may be considered simply as the 360th part of the circumference of the circle considered....
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