| John Muller - Mathematics - 1769 - 152 pages
...they fubtend will be in the fame ratio. C NB NB Mathematicians divide the circumference of a circle **into 360 equal parts, called degrees, each degree into 60 minutes, and each minute into 60** feconds. Thefe divifions being marked on a femi-circle of brafs, or on an ivory rectangle, called protraftor,... | |
| John Muller - Mathematics - 1773 - 202 pages
...in the fame ratio. C 3 NE NB Mathematicians divide the cir-r cumference of a circle into 360 equa} **parts, called degrees, each degree into 60 minutes, and each minute into 60** feconds. Thefe divifions being marked on a femi-circle of brafs, or on an ivory recl> angle, called... | |
| Benjamin Donne - 1796 - 120 pages
...calculating the proportion which angles bear to each other, fuppofe the circumference of every circle **to be divided into 360 equal parts, called Degrees ; each degree into 60** equal parts, called minutes ; each minute into 60 equal parts named feconds, &c. Ar. B. Sometimes the... | |
| Alexander Adam - Classical dictionaries - 1802 - 914 pages
...radii of the fame circle are always equal to one another. The circumference of every circle is fuppofed **to be divided into 360 equal parts, called degrees ; each degree into 60** mi* ñutes \ each minute into 60 feccnds ; and thefe into thirds, fourths, &c. greater or ¡efs according... | |
| John Bonnycastle - Trigonometry - 1806 - 464 pages
...contained between its two legs, and having the angular point for its centre. 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. So that a semicircle,... | |
| Thomas Keith - Navigation - 1810 - 478 pages
...aBC and 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... | |
| Thomas Keith - Astronomy - 1811 - 388 pages
...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,... | |
| Edward Augustus Kendall - 1811 - 462 pages
...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... | |
| 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,... | |
| 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... | |
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