 | Barnum Field - Geography - 1837 - 166 pages
...circle of the earth contains GO geographical, or 6Oi English miles. Each degree is divided into CO equal parts called minutes, and each minute into 60 seconds. These divisions are usually expressed by ° for degrees, ' for minutes, and " for seconds. PARALLELS. 4 : The Latitude... | |
 | Benjamin Peirce - Geometry - 1837 - 216 pages
...be divided into 360 equal arcs called degrees, and marked thus (°). For instance, 60° is read 60 degrees. Each degree is divided into 60 equal parts called minutes, and marked thus ('). Each minute is divided into 60 equal parts called seconds, and marked thus ("). When... | |
 | John Lee Comstock - Astronomy - 1838 - 268 pages
...surface as those of summer. OF LATITUDE AND LONGITUDE. Definitions. All circles surrounding the earth are divided into 360 equal parts called degrees ; each...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"... | |
 | J. David Parkes - 1839 - 222 pages
...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; 8 Opposition... | |
 | Charles Davies - Geometrical drawing - 1840 - 264 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...equal parts called minutes, and each minute into 60 equal parts called seconds. The degrees, minutes, and seconds, are marked thus, °, ', " ; and 9°... | |
 | Barnum Field - Geography - 1840 - 168 pages
...circle of the earth contains 60 geographical, or 69J English miles. Each degree is divided into GO equal parts called minutes, and each minute into 60 seconds. These divisions are usu »lly expressed by ° for degrees, ' for minutes, and " for seconds. PARALLELS. The Latitude of... | |
 | 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... | |
 | John Gregory - 1842 - 328 pages
...standard derived from the division of a circle into 360 equal parts, called degrees ; each degree being divided into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds, &c. As angles are proportional to the arcs on which they stand (33.6,)... | |
 | William Phillips - Mineralogy - 1844 - 832 pages
...consist. In measuring angles, the circle is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 seconds : the divisions being thus designated : 360°, 60', GO". If one fourth part of the circle, or 90°,... | |
 | Nathan Scholfield - Conic sections - 1845 - 542 pages
...the circle is supposed to be divided into 360 equal parts, called degrees, and each of those degrees is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds ; and so on, to thirds, fourths, &c. These divisions are designated by the... | |
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Every circumference of a. circle, whether the circle be large or small, is supposed to be 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. 
