| 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 - Mathematics - 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 - 306 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 - Mathematics - 1830 - 316 pages
...of trigonometrical calculations, the circumference of the circle is conceived to be divided into 36O **equal parts, called degrees ; each degree into 60...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 circumference,... | |
| Francis Joseph GRUND - Geometry, Plane - 1830 - 12 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 - 295 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 - 295 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... | |
| Joseph Allen - Geography - 1832 - 116 pages
...360 equal parts, called degrees, and each degree contains about 09 A miles. Each degree is divided **into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds.** Questions for Review. How many degrees are there in the circumference of the earth ? How many miles... | |
| Olinthus Gregory - 1833 - 427 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.... | |
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