| Mrs. L. H. Tyler - Astronomy - 1837 - 302 pages
...the plane of a circle. (21.) DBF. 4. Every circle, 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... | |
| Charles Davies - Navigation - 1837 - 342 pages
...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. As the circumference of a circle may be regarded... | |
| Thomas Kerigan - Nautical astronomy - 1838 - 804 pages
...hemisphere, and the other, the southern hemisphere. — The equator, like all other great circles, is **divided into 360 equal parts, called degrees ; each...60 equal parts, called minutes ; each minute into** , 60 equal parts, called seconds, and so on. The Meridian of any place on the earth is a great circle... | |
| Thomas Holliday - Surveying - 1838 - 404 pages
...in their opening or inclination to each other. 2. The circumference of every circle is supposed to **be divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes;** and each' minute again into 60 equal parts, called seconds. The angles are measured by the number of... | |
| Jeremiah Day - Geometry - 1838 - 416 pages
...latter, a circle is introduced. The periphery of every circle, whether great or small, is supposed to **be divided into 360 equal parts called degrees, each degree into 60** minutes, each minute into 60 seconds, each second into 60 thirds, &c., marked with the characters °,... | |
| Thomas Keith - 1839 - 498 pages
...and the arc DE is the measure of the angle ABC. (56) The circumference of every circle is supposed to **be divided into 360 equal parts called degrees, each...into 60 equal parts called minutes, each minute into** 60 equal parts called seconds. The angles are measured by the number of degrees cut from the circle... | |
| Charles Davies - Surveying - 1839 - 376 pages
...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 \ As the circumference of a... | |
| Charles Davies - Surveying - 1839 - 376 pages
...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. V As the circumference of... | |
| J. David Parkes - 1839 - 222 pages
...Aquarius, and X Pisces, which 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;... | |
| Jeremiah Day - Geometry - 1839 - 434 pages
...latter, a circle is introduced. The periphery of every circle, whether great or small, is supposed to **be divided into 360 equal parts called degrees, each degree into 60** minutes, each minute into 60 seconds, each second into 60 thirds, &c., marked with the characters °,... | |
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