 | Paul Hoste - Mathematics - 1769 - 294 pages
...is call'd the chord, or fubtendent of the arch. The whole circumference of every circle isfuppofed to be divided into 360 degrees, each degree into 60 minutes, and each minute inta 60 feconds, fcfr. 2. What 2. What an arch wants of 90 degrees, rs callM its complement; and its... | |
 | Euclid - Geometry - 1810 - 554 pages
...circle ACF be described 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... | |
 | John Lathrop - Astronomy - 1812 - 218 pages
...36O equal parts, called degrees. — [Fig. 1.] 48. Every circle is supposed to be divided into 3GO degrees ; each degree into 60 minutes, and each minute into 60 seconds. 49. A degree of a great circle in the heavens is a space nearly equal to twice the apparent diameter... | |
 | Charles Butler - 1814 - 582 pages
...point being the centre. 4. H has already been observed (Art. 23?. part 8.), that the wkJe circumference is supposed to be divided into 360 degrees, each degree into 60 minutes, each minute into 60 Seconds, &c. ; % many degrees, minutes, and seconds therefore, as are contained... | |
 | John Lathrop - Astronomy - 1821 - 206 pages
...artificial globe turns, and is divided into 360 equal parts, called degrees.—[Fig. 1.] 48. Every circle is supposed to be divided into 360 degrees; each degree into 60 minutes, and each minute into GO seconds. 49. A degree of a great circle in the heavens is a space nearly equal to twice the apparent... | |
 | Robert Simson - Trigonometry - 1827 - 546 pages
...ACF be described, 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... | |
 | James Charlton - Geography - 1829 - 250 pages
...withitt it, called the centre. ISsery cjrxje is. supppsed Ip b^djyided into 360 equai parts, called degrees, each degree into 60 minutes, and each minute into 60 seconds. Degrees are marked with a small cipher, minutes with -one dash, and' seconds' With two dashes. Thus,... | |
 | James Hayward - Geometry - 1829 - 218 pages
...For this purpose, the ancients divided the circumference of the circle into 360 equal parts, called degrees ; each degree into 60 minutes ; and each minute into 60 seconds. And the magnitude of an angle they expressed by the degrees, (°) minutes (') and seconds (",) which... | |
 | Euclid - 1835 - 540 pages
...described, meeting BA and BC, in A and 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... | |
 | Augustus De Morgan - Astronomy - 1836 - 144 pages
...confusion arising out of the use of the words minute and second in two different senses. The circle is divided into 360 degrees, each degree into 60 minutes, and each minute into 60 seconds. The latter two are called minutes and seconds of space — it should rather be of angle. The division... | |
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The circumference of a circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60 minutes, and each minute into 60 seconds. Degrees, minutes, and seconds are designated by the characters °, ', ". Thus 23° 14' 35" is read... 
