| Charles Davies - Surveying - 1839 - 261 pages
...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 TRIGONOMETRY. V As the circumference of a circle may be regarded as a proper measure... | |
| Charles Davies - Surveying - 1839 - 261 pages
...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 TRIGONOMETRY \ As the circumference of a circle may be regarded as a proper measure... | |
| J. David Parkes - 1839
...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;... | |
| Augustus De Morgan - Algebra - 1840 - 166 pages
...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, and 40 seconds. To find the area of a sector,... | |
| Charles Davies - Geometrical drawing - 1840 - 252 pages
...angles. For this purpose it is divided into 360 equal parts, called degrees, each degree is divided **into 60 equal parts called minutes, and each minute into 60 equal parts called** seconds. The degrees, minutes, and seconds, are marked thus, °, ', " ; and 9° 18' 10", are read,... | |
| Charles Davies - Navigation - 1835 - 359 pages
...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 circle maybe regarded as a proper measure of... | |
| Benjamin Franklin Edmands - Geography - 1841 - 75 pages
...2. A DEGREE is the 360th part of a circle, and contains CPJ English miles ; each degree is divided **into 60 equal parts, called minutes; and each minute into 60 equal parts, called** seconds. They are marked (°) degrees, (') minutes, (") seconds. The LONGITUDE of a place, is its distance... | |
| Charles Guilford Burnham - Arithmetic - 1841 - 312 pages
...every circle is supposed to be divided into 360 equal parts, called degrees; and each degree into 0O **equal parts, called minutes; and each minute into 60 equal parts, called** seconds; and these into thirds, &c. Hence a semi-circle containi 180 degrees, and a quadrant 90 degrees.... | |
| John Gregory - 1842 - 301 pages
...derived from the division of a circle into 360 equal parts, called degrees ; each degree being divided **into 60 equal parts, called minutes ; and each minute into 60 equal parts, called** seconds, &c. As angles are proportional to the arcs on which they stand (33.6,) the subdivision of... | |
| Joseph Emerson Worcester - Geography - 1844 - 331 pages
...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, 28 minutes, and 16 seconds. The Less Circles... | |
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