| Thomas Keith - Navigation - 1826 - 442 pages
...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 divided into 360...degrees, each degree into 60 equal parts called minutes,** each minute into 60 equal parts called seconds. The angles are measured by the number of degrees cut... | |
| Thomas Keith, Robert Adrain - Globes - 1826 - 334 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 Ryan - Mathematics - 1827 - 272 pages
...the 17th of March and the 25th of December t 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—... | |
| Robert Simson - Trigonometry - 1827 - 513 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,... | |
| Thomas Kerigan - Nautical astronomy - 1828 - 664 pages
...hemisphere, and the other, the southern hemisphere. — The equator, like all other great circles, is **divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes** } each minute into 60 equal parts, called seconds, and so on. The Meridian, of any place on the earth... | |
| Samuel Putnam - Readers (Secondary) - 1828 - 300 pages
...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... | |
| Zachariah Allen - Science - 1829 - 364 pages
...its extremities, as CD, A D. A quadrant is a sector forming a quarter of a circle. 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. Hence a semicircle contains 180 degrees, (marked 1 8011)... | |
| Thomas Curtis - Encyclopedias and dictionaries - 1829
...sides are called the LEGS, or sometimes the base and perpendicular. Fig. 10. 40. The circumference **of every circle is supposed to be divided into 360 equal parts, called DEGREES,** and each degree into sixty MIMUTES, each minute into sixty SECOND, and so on. Hence a semicircle contains... | |
| 1829
...into two equal parts ; a small circle divides it into two unequal parts. Every circle on the globe **is supposed to be divided into 360 equal parts, called degrees. Each degree** is subdivided into 60 minutes, and each minute into 60 seconds. ,(.,,,--.. j The Equator or Equinoctial... | |
| Francis Joseph Grund - Geometry, Plane - 1830 - 255 pages
...arcs of circles, described with any radius between their legs. The circumference is for this purpose **divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes;** each minute again into 60 equal parts, called seconds, &c. 16. The magnitude of an angle does not depend... | |
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