| Benjamin Donne - 1796
...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 - 858 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 - 419 pages
...a circle 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,... | |
| Horatio Gates Spafford - Astronomy - 1809 - 381 pages
...and are commonly parallel to some great one. These are the two tropics, and the two polar circles. **Every circle whether great or small, is supposed to be divided into 360 equal parts called degrees;** und each degree into 60 equal pans called minutes ; each minute into 60 equal parts called .seconds.... | |
| Thomas Keith - Navigation - 1810 - 420 pages
...the angle 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 - 346 pages
...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,... | |
| Edward Augustus Kendall - 1811
...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... | |
| Francis Nichols - Plane trigonometry - 1811 - 128 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,... | |
| Friedrich Christian Accum - Crystallography - 1813 - 396 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 - 670 pages
...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...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 an angle of 90 degrees. An arc... | |
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