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 into 60 equal parts, called seconds. An Elementary Geometry and Trigonometry - Page 11by William Frothingham Bradbury - 1873 - 238 pagesFull view - About this book
| Robert Simson - Trigonometry - 1806 - 518 pages
...n. The 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,... | |
| Robert Gibson - Surveying - 1806 - 452 pages
...The 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 Bonnycastle - Trigonometry - 1806 - 464 pages
...contained between its two legs, and having the angular point for its centre. Every circle is supposed to be **divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes** ; each minute into 60 equal parts, called seconds ; &c. So that a semicircle, or half the circumference,... | |
| John Hamilton Moore - Nautical astronomy - 1807 - 604 pages
...actually, or 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,... | |
| Astronomy - 1808 - 272 pages
...Ecliptic. This circle we suppose to be divided into 12 equal parts, called Signs ; each sign . into 30 **equal parts, called Degrees ; each degree into 60 equal parts called Minutes ; and** every minute into 60 equal parts, called Seconds; so that a second is the 60th part of a minute ; a... | |
| James Ferguson - Astronomy - 1809 - 533 pages
...ecliptic. tic. This circle we suppose to be divided into 12 equal parts, called signs ; each sign into 30 **equal parts, called degrees; each degree into 60 equal parts, called minutes; and each minute into 60** into 60 equal parts, called seconds : so that a second Plate I. is the 60th part of a minute ; a minute... | |
| John Ewing - Astronomy - 1809 - 664 pages
...another. Every circle, whether large or small, is supposed to be divided into 360 equal parts, which are **called degrees, each degree into 60 equal parts called minutes, and each minute into 60** seconds, and so on in a sixagesimal division as far as you please. If the earth be supposed to turn... | |
| Thomas Keith - Navigation - 1810 - 482 pages
...the arc DE is the measure of the angle ABC. (H) The circumference of every circle is supposed to be **divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes,** each minute into 60 equal parts called seconds. The angles are measured by the number of "egrees cut... | |
| 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,... | |
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