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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, fourths, &c. "
The Theory and Practice of Gauging, Demonstrated in a Short and Easy Method ... - Side 59
av Robert Shirtcliffe - 1740 - 283 sider
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On the Connexion of the Physical Sciences

Mary Somerville - 1835 - 532 sider
...the ellipse. NOTE 49. p. 12. Ninety degrees. A circle is divided into 3fiO equal parts, or degrees; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. It is usual to write these quantities thus, 15° 16' 10'', which means...
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A System of Natural Philosophy: In which the Principles of Mechanics ...

John Lee Comstock - 1835 - 308 sider
...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 GO parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign...
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A System of Natural Philosophy, in which the Principles of Mechanics ...

John Lee Comstock - 1835 - 308 sider
...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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The Element of Geometry

John Playfair - 1836 - 148 sider
...II. The circumference of a circle may be 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, &c. And as many degrees, minutes, seconds, &c. as are contained in any...
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Elements of Geometry and Trigonometry

Adrien Marie Legendre - 1836 - 394 sider
...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...
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A System of Natural Philosophy: In which the Principles of Mechanics ...

John Lee Comstock - 1836 - 308 sider
...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 sider
...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...
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A Treatise on Astronomy: Illustrated with Maps and Plates

Mrs. L. H. Tyler - 1837 - 302 sider
...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...
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A Treatise on Mensuration for the Use of Schools

Commissioners of National Education in Ireland - 1837 - 290 sider
...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...
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Youth's Book of Astronomy

John Lee Comstock - 1838 - 266 sider
...circles surrounding the earth are divided into 360 equal parts called degrees ; each degree is divided into 60 equal parts called minutes, and each minute into 60 parts called seconds. The signs by which these are indicated are 360° degrees, 60' minutes, and 30" seconds. These circles...
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