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. An Elementary Geometry and Trigonometry - Page 11by William Frothingham Bradbury - 1873 - 238 pagesFull view - About this book
| Edward Vermilye Huntington, Louis Albert Fischer - Engineering - 1916 - 196 pages
...(360 degrees = 1 revolution.) 1 degree = 1° = Ую of a right angle. The degree is usually divided **into 60 equal parts called minutes ('), and each minute into 60 equal parts called seconds** ("); while the second is subdivided decimally. But for many purposes it is more convenient to divide... | |
| Architecture - 1917 - 550 pages
...ie, it is -^ =£ of a circumference. Li order to obtain accurate measurements each degree is divided **into 60 equal parts called minutes and each minute into 60 equal parts called seconds.** r:~ S7_ Angular Measurement /OS /so 39 SOLIDS A solid has three dimensions — length, breadth, and... | |
| John William Norie, J. W. Saul - Nautical astronomy - 1917 - 642 pages
...hourangle, and QC is the easterly hour-angle of the star S'. PREPARATORY PROBLEMS LONGITUDE AND TIME **The circumference of every circle is divided into 360 equal parts, called degrees** ; now the earth, whose circumference as a sphere is 360°, turns on its axis in the direction of this... | |
| Heating - 1918 - 406 pages
...ie, it is vVr = | of a circumference. In order to obtain accurate measurements each degree is divided **into 60 equal parts called minutes and each minute into 60 equal parts called seconds.** Fig.. 67. Angular Measurement SOLIDS A solid has three dimensions — length, breadth, and thickness.... | |
| Building - 1919 - 502 pages
...it is -sVir = i of a circumference. In order to obtain accurate measurements each degree is divided **into 60 equal parts called minutes and each minute into 60 equal parts called seconds.** Fig. 67. Angular Measurement SOLIDS A solid has three dimensions — length, breadth, and thickness.... | |
| Harmon Bay Niver - Geography - 1922 - 376 pages
...matter what size it may be, 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 Equator and the meridian circles are called great circles, because they divide the earth into hemispheres.... | |
| Frank Moore Colby, Talcott Williams - Education - 1922 - 922 pages
...into 60 equal parts, thus producing the sexagesimal scale. (See NOTATION.) Thus the circumference of a **circle is divided into 360 equal parts, called degrees; each degree into** 00 equal parts, called minutes; and each minute into 60 equal parts, called seconds. Further divisions... | |
| Nathaniel Bowditch - Nautical astronomy - 1931 - 866 pages
...supposed to have their circumferences divided into 360 equal parts, cal.ed degrees; each degree is divided **into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds;** an arc is measured by the number of degrees, minutes, and seconds that it contains. A sphere is a solid... | |
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