| Nathaniel Bowditch - Nautical astronomy - 1826 - 617 pages
...or small, are supposed to have their circumference 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 so on into thirds, fourths,* be. and an arch is said to be. of as many degrees as it contains parts... | |
| Thomas Keith - Navigation - 1826 - 442 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 degrees cut... | |
| Nathaniel Bowditch - Nautical astronomy - 1826 - 617 pages
...small, are supposed to have th cumference divided into 360 equal parts, called degrees, and each deçr **60 equal parts, called minutes ; and each minute into 60 equal parts.** seconds, and so on into thirds, fourths,* be. and an arch is said to bi many degrees as it contains... | |
| Miles Bland - Geometry - 1827 - 377 pages
...angle (7.) Till lately. Geometers almost unanimously agreed to divide the circumference of the circle **into 360 equal parts called Degrees ; each degree...and each minute into 60 equal parts called Seconds,** &c. This method appeared to the Greek Geometers to afford some facilities for calculations, in consequence... | |
| Robert Simson - Trigonometry - 1827 - 513 pages
...II. The circumference of a 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,** &c. And as many degrees, minutes, seconds, &c. as are contained in any arch, of so many degrees, minutes,... | |
| James Thomson - 1827
...circle be divided into 360 equal parts, each of them is called a degree. Each degree is subdivided **into 60 equal parts, called minutes; and each minute into 60 equal parts, called** * Geography is a description of the earth ; and is distinguished by different names, according to tha... | |
| Adrien Marie Legendre, Thomas Carlyle - Mathematics - 1828 - 367 pages
...For the purposes of trigonometrical calculations, the circumference of the circle is conceived to be **divided into 360 equal parts, called degrees ; each...each minute into 60 equal parts, called seconds. The** semicircumference, or the measure of two right angles, contains 180 degrees; the quarter of the circumference,... | |
| Montgomery Robert Bartlett - Education - 1828
...the circle inUlour equal parts called quadrants. The circumference of every circle, is supposed to be **divided into 360 equal parts, called degrees; each...and each minute into 60 equal parts, called seconds;** and these into thirds, &c. Now, as all circles are not of the same magnitude, and as they are all divided... | |
| Thomas Kerigan - Nautical astronomy - 1828 - 664 pages
...hemisphere, and the other, the southern hemisphere. — The equator, like all other great circles, **is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes** } each minute into 60 equal parts, called seconds, and so on. The Meridian, of any place on the earth... | |
| 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 lines... | |
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