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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. "
A System of Geometry and Trigonometry: Together with a Treatise on Surveying ... - Page 10
by Abel Flint - 1825 - 241 pages
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The Element of Geometry

John Playfair - Geometry - 1836 - 148 pages
...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 60 equal parts...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, minutes,...
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Elements of Geometry and Trigonometry

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

John Lee Comstock - Physics - 1836 - 308 pages
...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: Illustrated with Maps and Plates

Mrs. L. H. Tyler - Astronomy - 1837 - 302 pages
...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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Elements of Surveying: Including a Description of the Instruments and the ...

Charles Davies - Navigation - 1837 - 342 pages
...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 Mensuration for the Use of Schools

Commissioners of National Education in Ireland - Measurement - 1837 - 290 pages
...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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Treatise on Arithmetic, in Theory and Practice: With an Appendix, Containing ...

James Thomson (LL.D.) - Arithmetic - 1837 - 296 pages
...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 20 articles...
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Euclid's Elements [book 1-6] with corrections, by J.R. Young

Euclides - 1838 - 264 pages
...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 part of the angular...
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The Complete Mathematical and General Navigation Tables: Including Every ...

Thomas Kerigan - Nautical astronomy - 1838 - 804 pages
...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, cuts the...
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Elements of Surveying: With a Description of the Instruments and the ...

Charles Davies - Surveying - 1839 - 376 pages
...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. PLANE TRIGONOMETRY. V As the circumference of a circle may be regarded as a proper measure of angles,...
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