| 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 by an... | |
| Robert Simson - Trigonometry - 1775 - 520 pages
...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... | |
| Euclid - 1781 - 520 pages
...between the tan.ngles HKB, ABC will \.E arc right ; therefore rill• 360 equal parts called degrees, and **each degree into 60 equal parts called minutes, and each minute into 60 equal parts called** feconds, &c- And as many degrees, minutes, feconds, &c. as are contained in any arch, of fo many degref.s... | |
| John Hamilton Moore - Nautical astronomy - 1791 - 296 pages
...Circle. All Circles, whether great or fmall, are divided into 360 equal Parts, called Degrees ; and **each Degree into 60 equal Parts, called Minutes ;...each Minute into 60 equal Parts called Seconds, &c.** A Semicircle is 180 Degrees, and a Quadrant contains 90 Degrees. A Right Angle contains 90 Degrees... | |
| John McGregor (teacher of mathematics.) - Mathematics - 1792 - 431 pages
...trigonometry. The circumference of any circle, is divided into 360 equal parts, called degrees, and **each degree into 60 equal parts, called 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
...The Circumference of every Circle is fuppofed 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,** and thefe into Thirds, Fourths, &c. thefe Parts being greater or lefs as the Radius is. 19. A Chord... | |
| Benjamin Donne - 1796
...calculating the proportion which angles bear to each other, fuppofe the circumference of every circle **to be divided into 360 equal parts, called Degrees ; each degree into 60 equal parts, called minutes** ; each minute into 60 equal parts named feconds, &c. Ar. B. Sometimes the circumference of a circle... | |
| Thomas Simpson - Trigonometry - 1799 - 79 pages
...The periphery of every circle is fuppofed 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** feconds, or fecond minutes, &c. ' B a 3- Any HK/ 3. Any part AB of the periphery of the circle is called... | |
| William Taylor (teacher of the mathematics.) - Arithmetic - 1800 - 519 pages
...a' femi-eircle • half the diameter is called the Radius. 8. The circumference of every circle is **divided into 360 equal parts called Degrees ; each...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 line joining... | |
| Mathematics - 1801 - 426 pages
...that, which stands at the angular point, is rend in the middle. C 56. The 39° 5 6. The circumference **of every circle is supposed to be divided into 360 equal parts, called degrees** ; and each degree into 60 minutes, each minute into do seconds, and so on. Hence a semicircle contains... | |
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