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
| 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
...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... | |
| 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... | |
| 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...and each minute into 60 equal parts, called seconds.** 26. As the circumference of a circle may be regarded as a proper measure of angles, having their vertices... | |
| 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...and each minute into 60 equal parts, called seconds.** The semicircumference, or the measure of two right angles, contains 1 80 degrees ; the quarter of the... | |
| 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
...used by Astronomers, Navigators, &c. Note 2. — 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 seconds, and each second into 60 thirds, &c. 16. Of Particulars. 12 Particular... | |
| 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... | |
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