| Adrien Marie Legendre - Geometry - 1828 - 346 pages
...For the purposes of trigonometrical calculations, the circumference of the circle 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. The semicircumference, or the measure of two right... | |
| John Bonnycastle - Geometry - 1829 - 252 pages
...called legs. PRACTICAL GEOMETRY. 21 D / -E B *47. 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 so on. 48. The measure of any right-lined angle is an arc of a circle contained between the two... | |
| James Hale - Surveying - 1829 - 115 pages
...Supplement of the Arch FA. Fig. 10. 28. The Circumference of every Circle is supposed to be divided into 300 **equal parts, called Degrees ; each Degree into 60 equal parts, called Minutes** ; and these into Thirds, &,c. 29. The measure of an Angle is the Arch of a Circle contained between... | |
| Charles Davies - Surveying - 1830 - 318 pages
...For the purposes of trigonometrical calculations, the circumference of the 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. 26. As the circumference of a circle may be... | |
| Adrien Marie Legendre - Geometry - 1830 - 344 pages
...of trigonometrical calculations, the circumference of the circle is conceived to be divided into 36O **equal parts, called degrees ; each degree into 60 equal parts, called minutes** ; and each minute into 60 equal parts, called seconds. The semicircumference, or the measure of two... | |
| Ira Wanzer - Arithmetic - 1831 - 396 pages
...used by Astronomers, Navigators, &c. Note 2. — 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 seconds, and each second into 60 thirds, &c. 16. Of Particulars. 12 Particular things make... | |
| Francis Joseph Grund - Geometry, Plane - 1834 - 190 pages
...also equal ; and the reverse is also true ; that is, if the two arcs intercepted by the legs of the **two angles at the centre of a circle, are equal to...16. The magnitude of an angle does not depend on the** length of the arc intercepted by its legs; but merely on the number of degrees, minutes, seconds, &c.,... | |
| William Smyth - Plane trigonometry - 1834 - 94 pages
...described with equal radii. 10. The entire circumference of every circle, whether great or small, is **divided into 360 equal parts called degrees, each...degree into 60 equal parts called minutes, each minute** into 60 equal parts called seconds, each second into 60 equal parts called thirds, &c. The character... | |
| Francis Joseph Grund - Geometry, Plane - 1834 - 190 pages
...If the circumference of a circle is divided into 360 equal parts, called degrees ; each degree again **into 60 equal parts, called minutes; each minute again into 60 equal parts, called seconds, &c.;** it is easy to perceive, that the magnitude of an angle does not depend upon the length of the arc intercepted... | |
| Olinthus Gregory - Mathematics - 1834 - 480 pages
...(See the next figure.) 3. The circumference of a circle is supposed to be divided or to be divisible **into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each** of these into 60 equal parts, called seconds ; and so on to the minutest possible subdivisions. Of... | |
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