 | Thomas Simpson - Trigonometry - 1810 - 168 pages
...the circle be supposed divided into some assigned number of equal parts. 2. The periphery of every 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... | |
 | Edward Augustus Kendall - 1811 - 462 pages
...the arcs of a circle, contained between the two legs, having the angular point for its centre. Ev.ery circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parti, called minutes $ each minute into' 60 equal parts, called seconds. " An angle is said... | |
 | Thomas Keith - Astronomy - 1811 - 388 pages
...for the beginning of the year 1804, was 13° 14' 43" and its declination 80° "15' 44" north. $ 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, &c. ; a degree is, therefore,... | |
 | Francis Nichols - Plane trigonometry - 1811 - 162 pages
...the other circle, subtending the same angle ABC. 5. COR. 4. Hence, if a circle of any radius whatever be divided into 360 equal parts, called degrees, each degree into 60 equal parts, called minutes; each minute into 6O equal parts, called seconds, &c., the number of degrees,... | |
 | Robert Gibson - Surveying - 1811 - 580 pages
...called semicircles ; and is double the radius, as AB or DE. fig. 8. m *!6. The circumference of every 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 caled seconds,... | |
 | John Lathrop - Astronomy - 1812 - 218 pages
...36O equal parts, called degrees. — [Fig. 1.] 48. Every circle is supposed to be divided into 3GO degrees ; each degree into 60 minutes, and each minute into 60 seconds. 49. A degree of a great circle in the heavens is a space nearly equal to twice the apparent diameter... | |
 | Friedrich Christian Accum - Crystallography - 1813 - 488 pages
...the circumference of a circle is the standard of comparison. This circle, of whatever size it may be, is supposed to be divided into 360 equal parts, called degrees ; each degree is again subdivided into 60 equal parts, called minutes, and every minute is subdivided into 60 seconds... | |
 | Jedidiah Morse - Geography - 1814 - 696 pages
...two radii, or the longest straight line, that can be drawn in a circle. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. An arc of a circle is the measure of an angle. Thus a right angle is... | |
 | John Gummere - Surveying - 1814 - 398 pages
...triangle, except the three angles, are given, the others are determined. 2. The periphery of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minnte into 60 equal parts, called seconds, &c. 3. The measure... | |
 | Euclides - 1814 - 560 pages
...ACF be described, meeting BA, BC, in A, C; the arch AC is called the measure of the angle ABC. II. The circumference of a circle is supposed to be divided into 360 equal part* called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal... | |
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The circumference of every circle is supposed to be divided into 360 equal parts, • called degrees, each degree into 60 minutes, and each minute into 60 seconds, etc. 
