| Augustus De Morgan - Celestial globes - 1845 - 172 pages
...divided into 360 equal parts, each of which is called a degree (of the circle). Each degree is divided into 60 equal parts called minutes, each minute into 60 equal parts called seconds. These are abbreviated as follows : — 38 degrees, 29 minutes, 42 seconds, is written 38° 29' 42".... | |
| Horatio Nelson Robinson - Arithmetic - 1845 - 310 pages
...used in calculating latitude and longitude, and also in measuring the motions of the heavenly bodies. Every circle is supposed to be divided into 360 equal parts, called degrees. TABLE. 60 seconds (") make 1 minute, . marked 60 minutes, 1 degree, ° 30 degrees 1 sign, s. 12 signs,... | |
| Nathan Scholfield - Conic sections - 1845 - 542 pages
...circumference may be regarded as the measure of angular magnitude. For this purpose the circumference of the circle is supposed to be divided into 360 equal parts, called degrees, and each of those degrees is divided into 60 equal parts called minutes, and each minute into 60 equal... | |
| Nathan Scholfield - Geometry - 1845 - 506 pages
...circumference may be regarded as the measure of angular magnitude. For this purpose the circumference of the circle is supposed to be divided into. 360 equal parts, called degrees, and each of those degrees is divided into 60 equal parts called minutes, find each minute into 60 equal... | |
| Anthony Nesbit - Measurement - 1859 - 494 pages
...fourth part of a circle, as ADC. 46. A sector is any part of a circle, bounded \'y an arc and two radii. 47. The circumference of every circle is supposed...into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into GO equal parts, called seconds. 48. The... | |
| Elias Loomis - Logarithms - 1859 - 372 pages
...Trigonometry treats of plane triangles; Spherical Trigonometry treats of spherical triangles. (19.) The circumference of every circle is supposed to be...into 360 equal parts, called degrees ; each degree into 60 minutes, and each minute into 60 seconds. Degrees, minutes, and seconds are designated by the... | |
| James Smith (author of the Panorama of science and art.) - Industrial arts - 1859 - 964 pages
...night, they wiW, except at these times, be always either increasing or decreasing. The hour is divided into 60 equal parts called minutes; each minute into 60 equal parts called seconds; and each second into 60 equal parts called thirds. The Jews, Chaldeans, and Arabians, divided the hour... | |
| Horatio Nelson Robinson - Arithmetic - 1859 - 362 pages
...suits containing 9 yd. 2 qr. each ; how many suits did he make ? Ans. 17. LONGITUDE AND TIME. c 324. Every circle is supposed to be divided into 360 equal parts, called degrees* Since the sun appears to pass from east to west round the earth, or through 360°, once in every 24... | |
| William E. Bell - Bridges - 1859 - 226 pages
...a tangent — O is the point of contact. 46. The circumference of every circle is measured by being supposed to be divided into 360 equal parts, called degrees; each degree contains 60 minutes, and each minute 60 seconds. Degrees, minutes, and seconds, are designated respectively... | |
| William Grier - Mechanical engineering - 1861 - 316 pages
...two on the two sides, that which stands at the angular point is read in the middle. Thus, DAE. 57. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 minutes, each minute into 60 seconds, and so on. Hence a semicircle contains... | |
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