 | Thomas Keith - Navigation - 1826 - 504 pages
...thus the arc ac is the measure 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...60 equal parts called minutes, each minute into 60 equal parts called seconds. The angles are measured by the number of degrees cut from the circle by... | |
 | Thomas Keith - Globes - 1826 - 360 pages
...1820, is 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,... | |
 | James M'Intire - Globes - 1826 - 234 pages
...which the sun describes by his annual progress in the heavens. The ecliptic cuts the equator in an •The circumference of every circle is supposed to be divided into 360 equal jjarts, called degrees; each degree into sixty equal parts, called minutes; each minute into sixty... | |
 | James Ryan - Arithmetic - 1827 - 290 pages
...are there between the 17th of March and the 25th of December ? Ans. 283. Division of the Circle. 47. The circumference of every circle is supposed to be...into 360 equal parts called degrees — each degree is subdivided into 60 equal parts called minutes — each minute into 60 equal parts called seconds-^—... | |
 | Miles Bland - Euclid's Elements - 1827 - 462 pages
...angle (7.) Till lately. Geometers almost unanimously agreed to divide the circumference of the circle into 360 equal parts called Degrees ; each degree into 60 equal parts called Minutes; and each minute into 60 equal parts called Seconds, &c. This method appeared to the Greek Geometers... | |
 | Robert Simson - Trigonometry - 1827 - 546 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,... | |
 | Montgomery Robert Bartlett - Education - 1828 - 426 pages
...7. The right lines, A, C, I,, and B, C, E, divide the circle inUlour equal parts called quadrants. The circumference of every circle, is supposed to...degrees; each degree into 60 equal parts called minutes; and each minute into 60 equal parts, called seconds; and these into thirds, &c. Now, as all circles... | |
 | Thomas Kerigan - Nautical astronomy - 1828 - 776 pages
...hemisphere, and the other, the southern hemisphere. — The equator, like all other great circles, is divided into 360 equal parts, called degrees ; each...equal parts, called minutes } each minute into 60 equal parts, called seconds, and so on. The Meridian, of any place on the earth is a great circle passing... | |
 | 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, or the measure of two right... | |
 | Samuel Putnam - Readers - 1828 - 314 pages
...greater part are poor and 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... | |
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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. 
