| Thomas Keith - 1839 - 498 pages
...measure of the angle aBc, and the arc DE is the measure of the angle ABC. (56) The circumference of every **circle is supposed to be divided into 360 equal parts...degrees, each degree into 60 equal parts called minutes,** each minute into 60 equal parts called seconds. The angles are measured by the number of degrees cut... | |
| J. David Parkes - 1839 - 222 pages
...Aquarius, and X Pisces, which are called the twelve signs of the Zodiac. Each sign is divided into 30 **equal parts, called degrees, each degree into 60 equal parts, called minutes, and each minute into 60** seconds, and so on to thirds, fourths, fifths, &c. Abréviations. — * Sextile; a Quartile; Д Trine;... | |
| Jeremiah Day - Geometry - 1839 - 432 pages
...measuring the latter, a circle is introduced. 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 °,... | |
| John Hymers - Logarithms - 1841 - 242 pages
...certain angle fixed upon as the unit of angular measure. For this purpose we divide a right angle into 90 **equal parts called degrees, each degree into 60 equal parts called minutes,** each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees,... | |
| 1844 - 634 pages
...brazen meridian is the circle in which the anifi- L cial globe turns, divided into 360 degree*. Every **circle is supposed to be divided into 360 equal parts,...called degrees, each degree into 60 equal parts, called** minute*, \ each minute into 60 equal parts, called seconds, &c. ; a degree is therefore only a relative... | |
| William Phillips - Mineralogy - 1844 - 832 pages
...angles is the number of degrees, minutes, &,c. of which they consist. In measuring angles, the circle is **divided into 360 equal parts, called degrees ; each...equal parts, called minutes ; and each minute into 60** seconds : the divisions being thus designated : 360°, 60', GO". If one fourth part of the circle,... | |
| Enoch Lewis - Conic sections - 1844 - 234 pages
...semicircle, is called its supplement. Thus BHD is the supplement of AB. 10. The circumference of every **circle is supposed to be divided into 360 equal parts,...degrees; each degree into 60 equal parts, called minutes;** each minute into 60 equal parts, called seconds, &c. Degrees, minutes and seconds are designated thus,... | |
| William Phillips - Mineralogy - 1844 - 834 pages
...angles is the number of degrees, minutes, &c. of which they consist. In measuring angles, the circle is **divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called** c* XXVI be intercepted by which meet at an minutes ; and each minute into 60 seconds : the divisions... | |
| Scottish school-book assoc - 1845 - 434 pages
...angled triingle to every minute of the quadrant. 3. In trigonometry all the angles round a point are **divided into 360 equal parts, called degrees, each...equal parts, called minutes, and each minute into** "0 equal parts, called seconds. Degrees, minutes, and seconds, are respectively designated by these... | |
| Mary Somerville - Physical sciences - 1846 - 506 pages
...distance from the i«a. NOTE 50, p. 9.— Ninety degrees. A circle is divided into 360 equal parts, or **degrees ; each degree into 60 equal parts, called minutes; and each minute into 60 equal** pans, called seconds. It is usual to write these quantities thus, 15° 16' 10", which means fifteen... | |
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