| Robert Gibson - Surveying - 1806 - 452 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,** and these into thirds, fourths, &c. these parts being greater or less as the radius is. 19. A chord... | |
| John Hamilton Moore - Nautical astronomy - 1807 - 604 pages
...fuppofed to have, their circumference divided 11110360 equal parts, called degrees, and each degree **into 60 equal parts, called minutes, and each minute into 60 equal parts, called** féconds, and fu on into thirds, fourths, &c. All angles are msafurcd by an arch of a circle, defcribed... | |
| Abel Flint - Geometry - 1808 - 192 pages
...Circumference of every Circle is supposcfl 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** ;. and these into Thirds, 8tc. Note. Since all Circles are divided into the same number of Degrees,... | |
| John Dougall - 1810 - 680 pages
...other four watches. In modern Europe the day is divided into 2* equal parts called hours, each hour **into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.** It has been found by experiment at London, in a spot elevated 113 feet above the level of the sea,... | |
| Robert Gibson - Surveying - 1811 - 592 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** caled seconds, and these into thirds, fourths, &c. these parts being greater or less as the radius... | |
| Caleb Alexander - Arithmetic - 1813 - 144 pages
...circumference of every circle, is supposed tobe divided into 360 equal parts, called degree»; and each degree, **into 60 equal parts, called minutes; and each minute, into 60 equal parts, called seconds,** and these into thirds, fourtUs, &c. 14. Parallel lines are equidistant from each other. 15 A figure,... | |
| Robert Gibson - Surveying - 1814 - 556 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,** and tiiese into thirds, fourths, &c. these parts being greater or less as the radius is.17. A chord... | |
| Charles Butler - 1814 - 568 pages
...usual to divide the whole circumference into 36O equal parts called degrees, to subdivide each degree **into 60 equal parts called minutes, and each minute into 60 equal parts called seconds,** &c. wherefore, if an angle at the centre be subtended by an arc which consists of suppose 30 degrees,... | |
| Euclides - 1816 - 528 pages
...circumference of a circle is supposed to be divided fnto 360 equal parts called degrees, and each degree **into 60 equal parts called minutes, and each minute into 60 equal parts called seconds,** &c. And as many degrees, minutes, seconds, &c. as are contained in any arc h, of so many degrees, minutes,... | |
| Thomas Keith - 1817 - 304 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 seconds.** The angles are measured by the number of degrees cut off from the circle, by the lines which form the... | |
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