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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 First Six Books: Together with the Eleventh and Twelfth - Seite 483
von Euclid - 1781 - 520 Seiten
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A System of Natural Philosophy: In which the Principles of Mechanics ...

John Lee Comstock - 1835 - 286 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 GO 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 - 114 Seiten
...the measure of the angle ABC, II. The circumference of a circle may be supposed to be divided into 360 equal parts called degrees ; and each degree into...minutes, and each minute into 60 equal parts called seconds, &c. And as many degrees, minutes, seconds, &c. as are contained in any arc, of so many degrees,...
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Elements of Geometry and Trigonometry

Adrien Marie Legendre - 1836 - 359 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...
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A System of Natural Philosophy: In which the Principles of Mechanics ...

John Lee Comstock - 1836 - 295 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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A Treatise on Astronomy

L. H. Tyler - 1837
...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,...
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Elements of Surveying: Including a Description of the Instruments and the ...

1837 - 249 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...
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A Treatise on Mensuration for the Use of Schools

Commissioners of National Education in Ireland - 1837 - 262 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...
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Treatise on Arithmetic, in Theory and Practice: With an Appendix, Containing ...

James Thomson (LL.D.) - 1837 - 284 Seiten
...every circle is supposed to be divided into 360 equal parts, called degrees;* each degree is subdivided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. MISCELLANEOUS TABLE. 12 articles =1 dozen „ ,-. ( 12 dozen = 1 gross 6 6core or 120" = i.ong...
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The Complete Mathematical and General Navigation Tables: Including Every ...

Thomas Kerigan - 1838
...circles of the spheres, is divided into 360 equal parts, called degrees ; each degree is divided into GO equal parts, called minutes, and each minute into 60 equal parts, called seconds. ,57 The Meridian of any place on the earth, is a semicircle which passes through that place,...
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Euclid's Elements [book 1-6] with corrections, by J.R. Young

Euclides - 1838
...subtended by one of these, as the angular unit. Each degree is moreover supposed to be subdivided into 00 equal parts, called minutes; and each minute into 60 equal parts, called seconds, and so on. The angle subtended by any number of these will, therefore, be some fractional...
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