 | Robert Simson - Trigonometry - 1806 - 546 pages
...circumference of a circle is supposed to be divided info 360 equal parts called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, i: >.. And as many degrees, minutes, seconds, &c. as are contained in any arch, of so many degrees,... | |
 | John Hamilton Moore - Nautical astronomy - 1807 - 586 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 - Surveying - 1808 - 190 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, a Degree... | |
 | John Dougall - 1810 - 684 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 - 580 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 - 152 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, having... | |
 | Abel Flint - Surveying - 1813 - 214 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, &tc. Note. Since all Circles are divided into the same number of Degrees, a Degree... | |
 | Robert Gibson - Surveying - 1814 - 558 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 is... | |
 | Charles Butler - 1814 - 582 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,... | |
 | Abner Alden - English language - 1814 - 222 pages
...number of circles ; and each circle 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. Q. What is a great circle ? A. A great circle is one, whose plane is supposed to pas through the centre... | |
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The circumference of every circle is supposed to be divided into 360 equal parts... 
