 | James Ferguson - Astronomy - 1809 - 574 pages
...ecliptic. tic. This circle we suppose to be divided into 12 equal parts, called signs ; each sign into 30 equal parts, called degrees; each degree into 60 equal parts, called minutes; and each minute into 60 into 60 equal parts, called seconds : so that a second Plate I. is the 60th... | |
 | Thomas Simpson - Trigonometry - 1810 - 168 pages
...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 - Geometry - 1810 - 554 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 - 388 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...; each minute into 60 equal parts called seconds, &c. ; a degree is, therefore, only a relative idea, and not an absolute quantity, except when applied... | |
 | Francis Nichols - Plane trigonometry - 1811 - 162 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...into 60 equal parts, called minutes; each minute into 6O equal parts, called seconds, &c., the number of degrees, minutes, and seconds, intercepted by two... | |
 | Edward Augustus Kendall - 1811 - 462 pages
...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... | |
 | Robert Gibson - Surveying - 1811 - 580 pages
...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,... | |
 | Edward Augustus Kendall - Encyclopedias and dictionaries - 1811 - 476 pages
...: -. Every circle is supposed to be divided into 369 equal parts, called degrees ; each degree iuto 60 equal parts, called minutes ; each minute into 60 equal parts, called seconds. An angle is said to be of as many degrees, minutes, seconds, &c. as arc contained in the arc, ov part... | |
 | Charles Hutton - Mathematics - 1811 - 406 pages
...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... | |
 | Friedrich Christian Accum - Crystallography - 1813 - 488 pages
...the circumference of a circle is the standard of comparison. This circle, of whatever size it may be, is supposed to be divided into 360 equal parts, called degrees ; each degree is again subdivided into 60 equal parts, called minutes, and every minute is subdivided into 60 seconds... | |
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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. 
