 | Philip Ronayne - Algebra - 1717 - 478 pages
...PARTI. .•;.-. . ... Of TRIGONOMETRf. f * r*" . У ;: "> •" ^ Definitions. ï; Д Circle is fuppofed to be ^* divided into 360 equal Parts, called Degrees, and each Degree into 60 equab Pans>calledMinutes,?md each Minute into 60 eqpal Parts1 called Seconds , ÖV. Any Partien -of... | |
 | E. S., Edmund Stone - Compasses (Mathematical instruments) - 1721 - 60 pages
...greateft Semitangent, or that of 1 80 Degrees, is infinite. The Circumference of every Circle is fuppofed to be divided into 360 equal Parts, called Degrees ; and each Degree in 60 equal Parts, called Minutes, &c. This Number was chofen by Geometricians for the Diviiion of... | |
 | Archibald Patoun - Navigation - 1734 - 568 pages
...into two equal Parts, and is double the Radius. 1 6. The Circumference of every Circle is fuppofed to be divided into 360 equal Parts, called Degrees ; and each Degree is divided into 60 equal Parts, called Minutes ; and each Minute into 60 e?ual Parts, called Seconds;... | |
 | Edmund Stone - Mathematical instruments - 1746 - 62 pages
...greatefi Semitangent, or that of 180 Degrees, is infinite. 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, &V. This Number was chofen by Geometricians for the Divifion of a Circle^... | |
 | Thomas Simpson - Logarithms - 1748 - 84 pages
...fuppofed divided into fome afligned Number of equal Parts. 2. 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 Seconds, or fecond Minutes,... | |
 | John Ward - Mathematics - 1771 - 510 pages
...RN: SN::RA: Г A. And RN : RS : : RA : RT= the Secant of that Arch. DEF INITIONS. 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, &c. Any Portion... | |
 | Charles Hutton - Measurement - 1788 - 728 pages
...point is read in the middle. 56. The circumference of every circle is fuppofed to be divided into 3 60 equal parts, called degrees; and each degree into 60 minutes, each minute into 60 feconds, and fo on. Hence a femicircle contains 1 80 degrees, and a quadrant 90 degrees. 57. The meafureofa... | |
 | John Hamilton Moore - Nautical astronomy - 1791 - 578 pages
...Degree is the 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 into 60 equal Parts, called Minutes ; and each Minute into 60 equal Parts called Seconds, &c. A Semicircle... | |
 | John McGregor (teacher of mathematics.) - Mathematics - 1792 - 532 pages
...It is divided into right-angled and oblique-angled 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,... | |
 | Robert Gibson - Surveying - 1795 - 384 pages
...; and is double the 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 60 equal Parts called Minutes, and each Minute into 60 equal Parts called Seconds, and thefe into Thirds,... | |
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The circumference of every 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 ; and these into thirds, &c. 
