| Robert Simson - Trigonometry - 1775 - 520 pages
...meafure of the angle ABC. II. The circumference of a circle is fuppofed to be divided into H h ' 360 **360 equal parts called degrees, and each degree into...60 equal parts called minutes, and each minute into** 6e equal parts called feconds, &c. And as many degrees, minutes, feconds, &c as are contained in any... | |
| Benjamin Donne - Geometry, Plane - 1775 - 159 pages
...Semicircle, or 2 Rt. ¿.s, and 90 Degrees a Quadrant, or Rt L. j) each Degree is fuppofed to be divided **into 60 equal Parts, called Minutes, and each Minute into 60 equal Parts, called** Seconds, &c. Hence it is plain, that in une' qual Circles, as well as in equal, equal Angles are fubtended... | |
| John Hamilton Moore - Nautical astronomy - 1791 - 296 pages
...ßooth Part of the Circumference of any Circle. All Circles, whether great or fmall, are divided into **360 equal Parts, called Degrees ; and each Degree...Minutes ; and each Minute into 60 equal Parts called** Seconds, &c. A Semicircle is 180 Degrees, and a Quadrant contains 90 Degrees. A Right Angle contains... | |
| John McGregor (teacher of mathematics.) - Mathematics - 1792 - 431 pages
...into right-angled and oblique-angled trigonometry. The circumference of any circle, is divided into **360 equal parts, called degrees, and each degree into...minutes, and each minute into 60 equal parts, called** féconds, and fo on. JVi/f, Degrees are frequently marked °, and minutes '. Thus, 30 degrees, 14 minutes,... | |
| Robert Gibson - Surveying - 1795 - 319 pages
...Radius, as AB cr DE. Fig. 8. 1 8. The Circumference of every Circle is fuppofed to be Divided into **360 equal Parts called Degrees, and each Degree into...Minutes, and each Minute into 60 equal Parts called** Seconds, and thefe into Thirds, Fourths, &c. thefe Parts being greater or lefs as the Radius is. 19.... | |
| Thomas Simpson - Trigonometry - 1799 - 79 pages
...fome affigned number of equal parts. 2. The periphery of every circle is fuppofed to be divided into **360 equal parts, called degrees ; and each degree...and each minute into 60 equal parts, called feconds,** or fecond minutes, &c. ' B a 3- Any HK/ 3. Any part AB of the periphery of the circle is called an... | |
| William Taylor (teacher of the mathematics.) - Arithmetic - 1800 - 519 pages
...called the Radius. 8. The circumference of every circle is divided into 360 equal parts called Degrees ; **each degree into 60 equal parts, called Minutes ; and each minute into 60 equal parts, called** Seconds, &c. Any part of the the circumference is called an Arch. 9. The Chord of an arch, is a right... | |
| Thomas Simpson - Algebra - 1800 - 400 pages
...circle is fuppofed to be divided into 360 equal parts, called degrees ; and each degree into 60 cgual **parts, called minutes, and each minute into 60 equal parts, called feconds,** or fccond minutes, &'c. Any part of the periphery is called an arch, and is ineafured by the number... | |
| Robert Simson - Trigonometry - 1804
...called the meafure of the angle ABC. II. The circumference of a circle is fuppofed to be divided into **360 equal parts called degrees, and each degree into...feconds, &c. as are contained in any arch, of fo many** degrees, mia nutes, feconds, &c. is the angle, of which that arch is the meafure, faid to be. CoR.... | |
| Abel Flint - Geometry - 1804 - 168 pages
...called Semicircles ; as AB or DE. 14. The. Circumference of every Circle is supposed to be Divided into **360 equal parts, called Degrees ; and each Degree...Minutes ; and each Minute into 60 equal parts, called** Seconds ; jktl these into Thirds, &c. Ifote. .-Since all Circles are divided into the same number of... | |
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