 | 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,... | |
 | John Hymers - Logarithms - 1841 - 244 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, seconds,... | |
 | Charles Davies - Navigation - 1835 - 388 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... | |
 | 1844 - 636 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 - 234 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...into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds, &c. Degrees, minutes and seconds are designated thus, °, ', ". 11.... | |
 | Joseph Emerson Worcester - Classical geography - 1844 - 356 pages
...pole ; and they are each 90 degrees from the equator. 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 secotuls. They are marked thus, 23° 88' 16"; ie 23 degrees,... | |
 | 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 - 444 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... | |
 | Ezra Otis Kendall - Astronomy - 1845 - 406 pages
...quadrant or 90° from all points in the circumference of that circle. Every circle is considered as 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 0 ' " — thus: 10° 2' 20"... | |
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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. 
