| Thomas Kerigan - Nautical astronomy - 1828 - 776 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
...the other two sides are called legs. PRACTICAL GEOMETRY. 21 D / -E B *47. The circumference of every **circle is supposed to be divided into 360 equal parts,...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... | |
| 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 two Lines... | |
| John Playfair - Geometry - 1829 - 186 pages
...Mathematicians suppose the circumference of every circle to be divided into 360 equal parts, called degrees, and **each degree into 60 equal parts, called minutes, and each minute into** £0 equal parts, called seconds, &c. Hence a right angle, being measured by a quadrant contains 90... | |
| Francis Joseph Grund - Geometry, Plane - 1830 - 274 pages
...arcs of circles, described with any radius between their legs. The circumference is for this purpose **divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes;** each minute again into 60 equal parts, called seconds, &c. 16. The magnitude of an angle does not depend... | |
| Ira Wanzer - Arithmetic - 1831 - 396 pages
...Note 1. — This table is used by Astronomers, Navigators, &c. Note 2. — The circumference of every **circle is supposed to be divided into 360 equal parts,...degrees; each degree into 60 equal parts, called minutes** ; each minute into 60 seconds, and each second into 60 thirds, &c. 16. Of Particulars. 12 Particular... | |
| Jeremiah Day - Measurement - 1831 - 394 pages
...measuring the latter, a circle is introduced. The periphery of every circle, whether great or small, **is supposed to be divided into 360 equal parts called degrees, each degree into 60** minutes, each minute into 60 seconds, each second into 60 thirds, &c, marked with the characters °,... | |
| John Lee Comstock - Physics - 1831 - 314 pages
...Constellation, and near the star a. Each of the 12 signs of the zodiac is divided into 30 smaller partSj **called degrees; each degree into 60 equal parts, called minutes, and each minute into 60** parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign having... | |
| John Lee Comstock - Physics - 1832 - 308 pages
...another constellation, and near the star a. Each of the 12 signs of the zodiac is divided into 30 smaller **parts, called degrees ; each degree into 60 equal parts, called minutes, and each minute into 60** parts, called seconds, The division of the zodiac into signs, is of very ancient date, each sign having... | |
| 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.... | |
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