| John Ewing - 1809 - 538 páginas
...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 - 1810 - 420 páginas
...thus the arc *c is 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...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... | |
| John Dougall - 1810 - 580 páginas
...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,... | |
| Thomas Simpson - 1810 - 125 páginas
...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... | |
| Euclid - 1810 - 518 páginas
...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 - 1811 - 346 páginas
...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 - 1811 - 128 páginas
...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 - 1811 - 508 páginas
...circumference into two equal 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,... | |
| Charles Hutton - 1811
...and the other two on the two sides, that which stands at the angular point is read in the middle. 57. **The circumference of every circle is supposed to be divided into 360** equnl parts, called Degrees : and each degree into 60 Minutes, each minute into 60 Seconds, and so... | |
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