 | Thomas Kerigan - Nautical astronomy - 1838 - 804 pages
...firmament. — The equator, or equinoctial, as well as all the other great 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... | |
 | Frederick Emerson - Arithmetic - 1839 - 300 pages
...GEOGRAPHICAL MEASURE. The circumference of the globe — like every other circle — is divided in 360 equal parts, called degrees. Each degree is divided into 60 equal parts called miles, or minutes. Three miles are called a league. On the equator, 69-g- statute miles are equal to... | |
 | Charles Davies - Surveying - 1839 - 376 pages
...with the utmost accuracy. 41. For the purposes of 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.... | |
 | Charles Davies - Surveying - 1839 - 376 pages
...with the utmost accuracy. 41. For the purposes of 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... | |
 | Charles Davies - Geometrical drawing - 1840 - 262 pages
...circle. 7. The circumference of a circle is used for the measurement of angles. For this purpose it is divided into 360 equal parts, called degrees, each...into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. The degrees, minutes, and seconds, are marked thus, °, ', " ;... | |
 | Benjamin Franklin Edmands - Geography - 1841 - 88 pages
...Antarctic Circle. See fig. 2. A DEGREE is the 360th part of a circle, and contains CPJ English miles ; each degree is divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. They are marked (°) degrees, (') minutes, (") seconds. The LONGITUDE... | |
 | Charles Davies - Navigation - 1835 - 388 pages
...with the utmost accuracy. 41. For the purposes of 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 TR16ONOMETRY.... | |
 | William Phillips - Mineralogy - 1844 - 834 pages
...measure of angles is the number of degrees, minutes, &c. of which they consist. In measuring angles, the circle is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called c* XXVI be intercepted by which meet at an minutes ; and each minute into... | |
 | Charles Davies - Geometrical drawing - 1846 - 254 pages
...used ? The circumference of a circle is used for the measurement of angles. 26. How is it divided? It is divided into 360 equal parts called degrees, each...into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. The degrees, minutes, and seconds, are marked thus, °, ', " ;... | |
 | Charles Davies - Arithmetic - 1847 - 368 pages
...longitude, and also in measuring the motions of the heavenly bodies. Every circle is supposed to be divided into 360 equal parts, called degrees. Each degree is divided into 60 minutes, and each minute into 60 seconds. TABLE. 60 seconds " make 1 minute, marked '. 60 minutes 1... | |
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Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. 
