 | Thomas Keith - Navigation - 1826 - 504 pages
...of the angle авс and the arc DE is the measure of the angle ABC. (H) 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 measured... | |
 | Thomas Keith - Globes - 1826 - 360 pages
...14° 13' 7" ; and its declination 88° 20' 55" N. Connoissance des Terns, for 1820, p. 168. t Every circle is supposed to be divided into 360 equal parts called degrees ; each minute, into 60 equal parts called seconds, &c. : (a degree therefore is of different lineal extent,... | |
 | 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 60 equal parts called seconds,... | |
 | James Ryan - Arithmetic - 1827 - 290 pages
...of March and the 25th of December ? Ans. 283. Division of the Circle. 47. The circumference of every circle is supposed to be divided into 360 equal parts called degrees — each degree is subdivided into 60 equal parts called minutes — each minute into 60 equal parts called seconds-^—... | |
 | Montgomery Robert Bartlett - Education - 1828 - 426 pages
...I,, and B, C, E, divide the circle inUlour equal parts called quadrants. 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; and these into thirds,... | |
 | Adrien Marie Legendre - Geometry - 1828 - 346 pages
...CIRCUMFERENCE. I. For the purposes of trigonometrical calculations, the circumference of the circle is conceived 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. The semicircumference,... | |
 | Samuel Putnam - Readers - 1828 - 314 pages
...destitute. • ANGLE, a corner, formed usually by the meeting of two lines. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees. A semi-circle, of course, contains li!0 degress, and a quadrant, or quarter of a circle, contains SO... | |
 | James Hayward - Geometry - 1829 - 218 pages
...designated by a circular arc. 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... | |
 | John Bonnycastle - Geometry - 1829 - 256 pages
...the other two sides are called legs. PRACTICAL GEOMETRY. 21 D / -E B *47. 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 so on. 48. The measure of any right-lined angle is an arc of a circle... | |
 | James Charlton - Geography - 1829 - 250 pages
...from a point 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, 23° ,... | |
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The circumference of every circle is supposed to be divided into 360 equal parts, • called degrees, each degree into 60 minutes, and each minute into 60 seconds, etc. 
