 | Thomas Keith - 1839 - 498 σελίδες
...the angle aBc, and the arc DE is the measure of the angle ABC. (56) The circumference of every circle is supposed to be divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds. The angles are... | |
 | Daniel Adams - 1848 - 316 σελίδες
...acre ? 5T 133. Difference in longitude and time between different places. Every circle, whether great or small, is supposed to be divided into 360 equal parts, called degrees. Let the accompanying diagram represent the great circle of the earth, called the equator, divided,... | |
 | 1844 - 636 σελίδες
...meridian is the circle in which the anifi- L cial globe turns, divided into 360 degree*. Every circle is supposed to be divided into 360 equal parts, called degrees, each degree into 60 equal parts, called minute*, \ each minute into 60 equal parts, called seconds, &c. ; a degree... | |
 | Samuel Maunder - 1843 - 914 σελίδες
...circle, is a sector having a quarter of the circumference for its arc. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; each deip-ee into 60 minutes; and each minute into 60 seconds -. hence a semicircle contains ISO degrees,... | |
 | Enoch Lewis - 1844 - 240 σελίδες
...semicircle, is called its supplement. Thus BHD is the supplement of AB. 10. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds, &c, Degrees,... | |
 | Joseph Emerson Worcester - 1844 - 362 σελίδες
...parts. These are four, the two tropics, and the two polar circles. 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. " They are... | |
 | Charles Davies - 1846 - 370 σελίδες
...number of days required ; and so of others. DIVISION OF THE CIRCLE MEASURE OF TIME. 40. 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. For astronomical... | |
 | Henry Hopwood - 1846 - 250 σελίδες
...earth into two unequal parts. Every circle, great or small, is supposed, by English mathematicians, to be divided into 360 equal parts, called degrees; each degree is subdivided into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.... | |
 | Charles Davies - 1847 - 368 σελίδες
...estimating latitude and longitude, and also in measuring the motions of the heavenly bodies. Every circle is supposed to be divided into 360 equal parts, called degrees. Each degree is divided into 60 minutes, and each minute into 60 seconds. TABLE. 60 seconds " make 1 minute, marked '. 60 minutes 1... | |
 | Charles Davies - 1847 - 368 σελίδες
...estimating latitude and longitude, and also in measuring the motions of the heavenly bodies. Every circle is supposed to be divided into 360 equal parts, called degrees. Each degree is divided into 60 minutes, and each minute into 60 seconds. TABLE. 60 seconds " make 1 minute, marked '. 60 minutes 1... | |
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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. 
