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. Plane and Spherical Trigonometry - Page 2by Claude Irwin Palmer, Charles Wilbur Leigh - 1916 - 188 pagesFull view - About this book
| Joseph Emerson Worcester - Classical geography - 1844 - 356 pages
...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 into 60 equal parts, called secotuls. They are marked thus, 23° 88' 16"; ie 23 degrees, 28 minutes, and 16 seconds. The Less Circles... | |
| 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 following characters, 0... | |
| Nathan Scholfield - Conic sections - 1845 - 244 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 following characters, °... | |
| Scottish school-book assoc - 1845 - 444 pages
...circle is supposed to be divided into 300 equal parts, called degrees, and each degree is supposed to be divided into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are distinguished by the following marks : — 7° 3' 24", which is... | |
| Ezra Otis Kendall - Astronomy - 1845 - 404 pages
...that circle. Every circle is considered as divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. They are marked 0 ' " — thus: 10° 2' 20" — which is read ten degrees, two minutes, and twenty... | |
| Charles Davies - Geometrical drawing - 1846 - 254 pages
...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 degree is divided...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,... | |
| Henry Hopwood - 1846 - 250 pages
...English mathematicians, 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. Degrees are marked (°), minutes ('), and seconds ("). These degrees vary in length according to the... | |
| Charles Davies - Arithmetic - 1846 - 378 pages
...OF TIME. 40. Every circle is supposed 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. For astronomical purposes, the circumference of the circle is also supposed to be divided into 12 equal... | |
| Mary Somerville - Physical sciences - 1846 - 506 pages
...NOTE 50, p. 9.— Ninety degrees. A circle is divided into 360 equal parts, or degrees ; each degree into 60 equal parts, called minutes; and each minute into 60 equal pans, called seconds. It is usual to write these quantities thus, 15° 16' 10", which means fifteen... | |
| James Robinson (of Boston.) - 1847 - 304 pages
...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. Hence, a semicircle measures 180 degrees, and a quadrant 90 degrees. 46. The measure of an angle is... | |
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