| 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... | |
| 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... | |
| 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... | |
| 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... | |
| 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 \ As the circumference of a circle may be regarded as a proper measure of angles,... | |
| 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,... | |
| J. David Parkes - 1839 - 222 pages
...are called the twelve signs of the Zodiac. Each sign is divided into 30 equal parts, called degrees, **each degree into 60 equal parts, called minutes, and each minute into 60** seconds, and so on to thirds, fourths, fifths, &c. Abréviations. — * Sextile; a Quartile; Д Trine;... | |
| Augustus De Morgan - Algebra - 1840 - 182 pages
...square of the radius by 3-1415927. * The right angle is divided into 90 equal parts called degrees, **each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.** Thus, 2° 15' 40" means 2 degrees, 15 minutes, and 40 seconds. To find the area of a sector, very nearly,... | |
| Augustus De Morgan - Algebra - 1840 - 186 pages
...square of the radius by 3-1415927. - The right angle is divided into 90 equal parts called degrea, **each degree into 60 equal parts called minutes, and each minute into 60 equal parts called** seccnde. Thus, 2° 15' 40" means 2 degrees, 15 minutes, and 40 seconds. To find the area of a sector,... | |
| Charles Davies - Geometrical drawing - 1840 - 264 pages
...angles. For this purpose it is divided into 360 equal parts, called degrees, each degree is divided **into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.** The degrees, minutes, and seconds, are marked thus, °, ', " ; and 9° 18' 10", are read, 9 degrees,... | |
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