| Charles Davies, William Guy Peck - Mathematics - 1857 - 608 pages
...purposes of trigonometrical computation, each quadrant or right angle is supposed to be divided into 90 **equal parts, called degrees ; each degree into 60 equal parts, called minutes ; each minute** into 60 equal parts, called seconds ; so that a right angle contains 32400 seconds. The complement... | |
| Bourdon (M., Louis Pierre Marie) - Arithmetic - 1858 - 262 pages
...point within, called the centre. In all the scientific works in this country, the circumference is **divided into 360 equal parts, called degrees (°)...into 60 equal parts, called minutes (,); each minute** into 60 equal parts, called seconds ("). This is called the sexagesimal division. When the French reformed... | |
| John Hymers - Logarithms - 1858 - 292 pages
...of being determined geometrically, and furnishes an invariable standard of angular measure) into 90 **equal parts called degrees, each degree into 60 equal parts called minutes, each minute** into 60 equal parts called seconds; then an angle is expressed by the number of degrees, minutes, seconds,... | |
| Josiah Lyman - Protractors - 1862 - 92 pages
...the fourth part of a circle; as AFB, Fig. 1. 8. 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, &c. 9. The Measure of an angle is the arc intercepted... | |
| Benjamin Greenleaf - Geometry - 1862 - 518 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 **equal parts called degrees, each degree into 60 equal parts called minutes, each minute** into 60 equal parts called seconds ; then an angle is expressed by the number of degrees, minutes,... | |
| Benjamin Greenleaf - Geometry - 1861 - 638 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 **equal parts called degrees, each degree into 60 equal parts called minutes, each minute** into 60 equal parts culled seconds ; then an angle is expressed by the number of degrees, minutes,... | |
| Olinthus Gregory - 1863 - 482 pages
...(See the next figure.) 3. The circumference of a circle is supposed to be divided or to be divisible **into. 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each** of these into 60 equal parts, called seconds ; and so on to the minutest possible subdivisions. Of... | |
| William Frothingham Bradbury - Plane trigonometry - 1864 - 324 pages
...from a point within, called the centre ; as ABD E. 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 ( "). 34. The RADIUS of a circle is a line... | |
| C. Davies - 1867 - 342 pages
...GEOMETRYDefinitions 28 The circumference of a circle is used for the measurement of angles- For this purpose it is **divided into 360 equal parts called degrees, each degree into 60 equal parts called** ninutes, and each minute into 60 equal parts called secondsThe degrees, minutes, and seconds are marked... | |
| Asa Smith - 1868 - 86 pages
...— The boundary of a circle. The circumference of every circle ¡в supposed to be divided into and **equal parts, called degrees ; each degree into 60 equal parts, called minutes** ; and each minute into 60 equal parts, called seconds. Circumpolar Start.— Those stars which revolve... | |
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