| 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;... | |
| Augustus De Morgan - Algebra - 1840 - 182 pages
...radius, very nearly. Multiply the square of the radius by 3-1415927. * The right angle is divided into 90 **equal parts called degrees, each degree into 60 equal parts called minutes,** and each minute into 60 equal parts called seconds. Thus, 2° 15' 40" means 2 degrees, 15 minutes,... | |
| Charles Davies - Navigation - 1835 - 359 pages
...accuracy. 41. For the purposes of trigonometrical calculations, the circumference of the circle is **divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes;** and each minute into 60 equal parts, called seconds. PLANE TR16ONOMETRY. As the circumference of a... | |
| 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, minutes,... | |
| 1844 - 634 pages
...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... | |
| Enoch Lewis - Conic sections - 1844 - 228 pages
...supplement. Thus BHD is the supplement of AB. 10. 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, &c, Degrees, minutes and seconds are designated thus, °, ', ".... | |
| Joseph Emerson Worcester - Geography - 1844 - 331 pages
...four, the two tropics, and the two polar circles. The circumference of every circle is supposed to be **divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes** ; and each minute into 60 equal parts, called seconds. " They are marked thus, 23° 28' 16"; ie 83... | |
| 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 degree into 60 equal parts, called minutes** ; and each minute into 60 seconds : the divisions being thus designated : 360°, 60', GO". If one fourth... | |
| 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 degree into 60 equal parts, called minutes,** and each minute into "0 equal parts, called seconds. Degrees, minutes, and seconds, are respectively... | |
| |