The periphery of every circle, whether great or small, is supposed to be divided into 360 equal parts called degrees, each degree into 60 minutes, each minute into 60 seconds, each second into 60 thirds, &c., marked with the characters °, ', ", '", &c.... A Treatise of Plane Trigonometry: To which is Prefixed, a Summary View of ... - Page 37by Jeremiah Day - 1815 - 126 pagesFull view - About this book
| 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
...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 - 448 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 - 478 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... | |
| Edward Augustus Kendall - 1811 - 462 pages
...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
...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,... | |
| 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
...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...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 an angle of 90 degrees.... | |
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