| John Lee Comstock - Astronomy - 1838 - 268 pages
...LONGITUDE. Definitions. All circles surrounding the earth are divided into 360 equal parts called degrees ; **each degree is divided into 60 equal parts called minutes, and each minute into 60** parts called seconds. The signs by which these are indicated are 360° degrees, 60' minutes, and 30"... | |
| Thomas Kerigan - Nautical astronomy - 1838
...circles of the spheres, is divided into 360 equal parts, called degrees ; each degree is divided into GO **equal parts, called minutes, and each minute into 60 equal parts, called seconds.** ,57 The Meridian of any place on the earth, is a semicircle which passes through that place, cuts the... | |
| Euclides - 1838 - 264 pages
...subtended by one of these, as the angular unit. Each degree is moreover supposed to be subdivided into 00 **equal parts, called minutes; and each minute into 60 equal parts, called seconds,** and so on. The angle subtended by any number of these will, therefore, be some fractional part of the... | |
| C. Davies - Surveying - 1839 - 380 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 TRIGONOMETRY. V As the circumference of a circle may be regarded as a proper measure of angles,... | |
| Charles Davies - Surveying - 1839 - 376 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 TRIGONOMETRY \ As the circumference of a circle may be regarded as a proper measure of angles,... | |
| Charles Davies - Geometrical drawing - 1840 - 264 pages
...for the measurement of angles. For this purpose it is divided into 360 equal parts, called degrees, **each degree is divided into 60 equal parts called...and each minute into 60 equal parts called seconds.** The degrees, minutes, and seconds, are marked thus, °, ', " ; and 9° 18' 10", are read, 9 degrees,... | |
| 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 - 1841 - 88 pages
...the Antarctic Circle. See fig. 2. A DEGREE is the 360th part of a circle, and contains CPJ English **miles ; each degree is divided into 60 equal parts,...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 - 359 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,... | |
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