| John Ewing - Astronomy - 1809 - 538 pages
...another. Every circle, whether large or small, is supposed to be divided into 360 equal parts, which are **called degrees, each degree into 60 equal parts called minutes, and each minute into 60** seconds, and so on in a sixagesimal division as far as you please. If the earth be supposed to turn... | |
| Thomas Keith - Navigation - 1810 - 420 pages
...the measure of the angle aBC and the arc DE is the measure of the angle ABC. (H) The circumference **of every circle is supposed to be divided into 360...degrees, each degree into 60 equal parts called minutes,** each minute into 60 equal parts called seconds. The angles are measured by the number of "egrees cut... | |
| Thomas Simpson - Trigonometry - 1810 - 125 pages
...certain right lines in and about the circle be supposed divided into some assigned number of equal parts. **2. The periphery of every circle is 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... | |
| John Dougall - 1810 - 580 pages
...other four watches. In modern Europe the day is divided into 2* equal parts called hours, each hour **into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.** It has been found by experiment at London, in a spot elevated 113 feet above the level of the sea,... | |
| Euclid - Geometry - 1810 - 518 pages
...meeting BA, BC in A, C; the arch AC is called the measure of the angle ABC. II. The circumference of a **circle is 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,... | |
| Thomas Keith - Astronomy - 1811 - 346 pages
...ascention, for the beginning of the year 1804, was 13° 14' 43" and its declination 80° "15' 44" north. $ **Every circle is supposed to be divided into 360 equal...degrees ; each degree into 60 equal parts called minutes** ; each minute into 60 equal parts called seconds, &c. ; a degree is, therefore, only a relative idea,... | |
| Edward Augustus Kendall - 1811
...measured by the arcs of a circle, contained between the two legs, having the angular point for its centre. **Ev.ery circle is supposed to be divided into 360 equal...parts, called degrees ; each degree into 60 equal** parti, called minutes $ each minute into' 60 equal parts, called seconds. " An angle is said to be... | |
| Francis Nichols - Plane trigonometry - 1811 - 128 pages
...the other circle, subtending the same angle ABC. 5. COR. 4. Hence, if a circle of any radius whatever **be divided into 360 equal parts, called degrees, each degree into 60 equal parts, called minutes;** each minute into 6O equal parts, called seconds, &c., the number of degrees, minutes, and seconds,... | |
| Robert Gibson - Electronic books - 1811 - 508 pages
...parts, called semicircles ; and is double the radius, as AB or DE. fig. 8. m *!6. The circumference **of every circle is 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 caled seconds,... | |
| Caleb Alexander - Arithmetic - 1813 - 144 pages
...circumference of every circle, is supposed tobe divided into 360 equal parts, called degree»; and **each degree, into 60 equal parts, called minutes;...each minute, into 60 equal parts, called seconds,** and these into thirds, fourtUs, &c. 14. Parallel lines are equidistant from each other. 15 A figure,... | |
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