| John Playfair - Trigonometry - 1836 - 114 pages
...The circumference of a circle may be supposed to be divided into 360 equal parts called degrees ; and **each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds,** &c. And as many degrees, minutes, seconds, &c. as are contained in any arc, of so many degrees, minutes,... | |
| John Lee Comstock - Physics - 1836 - 295 pages
...already seen, the sun appears to move Each of the 12 signs of the zodiac is divided (nto 30 smaller **parts, called degrees; each degree into 60 equal parts, called minutes, and each minute into** BO parts, called seconds.) The division of the zodiac into signs, is of very ancient date, each sign... | |
| Navigation - 1837 - 249 pages
...utmost accuracy. 41. For the purposes of trigonometrical calculations, the circumference of the circle **is divided into 360 equal parts, called degrees ;...and each minute into 60 equal parts, called seconds.** As the circumference of a circle may be regarded as a proper measure of angles, having their vertices... | |
| L. H. Tyler - 1837
...plane of a circle. (21.) DBF. 4. Every circle, from the smallest to the largest, is conceived to be **divided into 360 equal parts, called degrees ; each...and each minute into 60 equal parts, called seconds.** These divisions are usually expressed by signs : thus, 15° 10' 15" signifies five degrees, ten minutes,... | |
| Commissioners of National Education in Ireland - 1837
...circumference pf every circle is generally divided into 360 equal parts, called degrees ; and every **degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. The** angles are measured by the number of degrees contained in the arcs which subtend them ; thus, if the... | |
| James Thomson (LL.D.) - Arithmetic - 1837 - 284 pages
...every circle is supposed to be divided into 360 equal parts, called degrees;* each degree is subdivided **into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds.** MISCELLANEOUS TABLE. 12 articles =1 dozen „ ,-. ( 12 dozen = 1 gross 6 6core or 120" = i.ong 20 articles... | |
| Thomas Holliday - 1838
...their opening or inclination to each other. 2. The circumference of every circle is supposed to be **divided into 360 equal parts, called degrees; each...into 60 equal parts, called minutes; and each' minute** again into 60 equal parts, called seconds. The angles are measured by the number of degrees, &c., cut... | |
| Hiram Mattison - Astronomy - 1872 - 252 pages
...sometimes called radiations or itldianr-6. All circles, whether great or small, are supposed to be **divided into 360 equal parts, called degrees / each degree into 60 equal** paits, called minutes; and each minute into 60 equal parts, called seconds. They are marked respectively... | |
| William Frothingham Bradbury - Geometry - 1873 - 238 pages
...Trigonometry treats of methods of computing plane angles and triangles. П, The circumference of every circle **is divided into 360 equal parts, called degrees (...and each minute into 60 equal parts, called seconds** ( " ). I8« As angles at the centre vary as their arcs, or arcs as their corresponding angles, the... | |
| George Augustus Walton - Arithmetic - 1873 - 336 pages
...plane surface ; circle ; circumference ; arc ; radius ; diameter. 330. The circumference of a circle **is divided into 360 equal parts called degrees, each degree into 60** minutes, and each minute into 60 seconds. These are the units of CIRCULAR MEASURE. TABLE. 60 seconds... | |
| |