| Benjamin Greenleaf - Geometry - 1861 - 628 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,... | |
| Henry S. Merrett - 1863 - 476 pages
...described on the angular point, but by certain lines described about that arc. The circumference of every **circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60** minutes ; each minute into 60 seconds ; and so on. The sine of three angles of every triangle, or two... | |
| Henry S. Merrett - 1863 - 428 pages
...described on the angular point, but by certain lines described about that arc. The circumference of every **circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60** minutes ; each minute into 60 seconds ; and so on. The sine of three angles of every triangle, or two... | |
| 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.... | |
| Evan Wilhelm Evans - Geometry - 1862 - 116 pages
...are may be taken as the measure of its subtended angle. To this end the circumference is conceived **to be divided into 360 equal parts, called degrees, each degree into 60** minutes, and each minute into 60 seconds. Then whatever number of degrees, etc., an arc contains, the... | |
| George Augustus Walton - Arithmetic - 1864 - 362 pages
...circumference, through the centre, to an opposite point, is called a Diameter. 188. The circumference of any **circle is supposed to be divided into 360 equal parts, called Degrees, each degree into 60** Minutes, and each minute into 60 Seconds. TABLE. 60 seconds (") = 1 minute, marked '. 60' =1 degree,... | |
| George Augustus Walton - Arithmetic - 1864 - 368 pages
...circumference, through the centre, to an opposite foiat, is called a Diameter. 188. The circumference of any **circle is supposed to be divided into 360 equal parts, called Degrees, each degree into 60** Minutes, and each minute into 60 Seconds. TABLE. marked '. u о 60 seconds (") = 1 minute, 60' =1 degree,... | |
| 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... | |
| Elias Loomis - Trigonometry - 1868 - 380 pages
...plane triangles; Spherical Trigonometry treats of spherical triangles. (19.) The circumference of every **circle is supposed to be divided into 360 equal parts, called degrees ; each degree into** 6O minutes, and each minute into 60 seconds. Degrees, minutes, and seconds are designated by the characters... | |
| Benjamin Greenleaf - 1869 - 516 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,... | |
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