| Nathaniel Bowditch - 1826 - 617 páginas
...or small, are supposed to have their circumference 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,** and so on into thirds, fourths,* be. and an arch is said to be. of as many degrees as it contains parts... | |
| Thomas Keith - 1826 - 334 páginas
...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 - 1826 - 215 páginas
...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... | |
| Nathaniel Bowditch - 1826 - 617 páginas
...small, are supposed to have th cumference divided into 360 equal parts, called degrees, and each deçr **60 equal parts, called minutes ; and each minute into 60 equal parts.** seconds, and so on into thirds, fourths,* be. and an arch is said to bi many degrees as it contains... | |
| Miles Bland - 1827 - 377 páginas
...angle (7.) Till lately. Geometers almost unanimously agreed to divide the circumference of the circle **into 360 equal parts called Degrees ; each degree...and each minute into 60 equal parts called Seconds,** &c. This method appeared to the Greek Geometers to afford some facilities for calculations, in consequence... | |
| James Ryan - 1827 - 272 páginas
...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-^—... | |
| James Thomson - 1827
...circle be divided into 360 equal parts, each of them is called a degree. Each degree is subdivided **into 60 equal parts, called minutes; and each minute into 60 equal parts, called** * Geography is a description of the earth ; and is distinguished by different names, according to tha... | |
| Robert Simson - 1827 - 513 páginas
...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 - 1828
...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...and each minute into 60 equal parts, called seconds;** and these into thirds, &c. Now, as all circles are not of the same magnitude, and as they are all divided... | |
| Adrien Marie Legendre - 1828 - 316 páginas
...CIRCUMFERENCE. I. For the purposes of trigonometrical calculations, the circumference of the circle is conceived **to be divided into 360 equal parts, called degrees...and each minute into 60 equal parts, called seconds.** The semicircumference, or the measure of two right angles, contains 180 degrees; the quarter of the... | |
| |