| Augustus De Morgan - Algebra - 1840 - 182 pages
...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, very nearly,... | |
| Augustus De Morgan - Algebra - 1840 - 186 pages
...the radius by 3-1415927. - The right angle is divided into 90 equal parts called degrea, each degree **into 60 equal parts called minutes, and each minute into 60 equal parts called** seccnde. Thus, 2° 15' 40" means 2 degrees, 15 minutes, and 40 seconds. To find the area of a sector,... | |
| Benjamin Franklin Edmands - Geography - 1841 - 88 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 from... | |
| Charles Davies - Navigation - 1835 - 388 pages
...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 angles,... | |
| Charles Guilford Burnham - Arithmetic - 1841 - 324 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. 15.... | |
| Roswell Chamberlain Smith - Arithmetic - 1841 - 324 pages
...through the centre of the earth. 15 CORRESPOH D, [L. eorrespondeo.} To answer to ; communicate with. **parts, called minutes, and each minute into 60 equal parts, called seconds.** 76. The circumference1 of the earth is a great circle of 360 de prees. On this circle every minute... | |
| John Gregory - 1842 - 328 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 the circumference... | |
| Joseph Emerson Worcester - Classical geography - 1844 - 362 pages
...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 degrees, 23 minutes, and 16 seconds. The Equator is an... | |
| Joseph Emerson Worcester - Classical geography - 1844 - 356 pages
...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... | |
| Ezra Otis Kendall - Astronomy - 1845 - 404 pages
...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" — which is read ten degrees, two minutes, and twenty... | |
| |