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. The Element of Geometry - Page 90by John Playfair - 1836 - 114 pagesFull view - About this book
| Philip Ronayne - Algebra - 1717 - 408 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... | |
| Edmund Stone - Compasses (Mathematical instruments) - 1721 - 44 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 - 414 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;... | |
| Philip Ronayne - Algebra - 1738 - 421 pages
...I. Of DEFINITIONS. i. A Circle is fuppos'd to be r\ divided into 360 equal Parts, called Degrees j **and each Degree into 60 equal Parts, called Minutes...and each Minute into 60 equal Parts, called Seconds** 5 t£c. Any Portion \ of whofe Circumference is called an Arch, and is meafured by the Number of Degrees... | |
| Robert Shirtcliffe - Gaging - 1740 - 283 pages
...Ancients divided the Circumference of a Circle into 360 equal Parts, each of which they called a Degree ; **and each Degree into 60 equal Parts called Minutes ; and each Minute into 60** Parts called Seconds, and fo on to thirds, fourths, &c. every Arch of a Circle, being denoted by the... | |
| Edmund Stone - Mathematical instruments - 1746 - 44 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^ becaufe it may be divided... | |
| John Ward - Mathematics - 1747 - 480 pages
...of that Arch. IPIane ^Trigonometry. I. A Circle is -tJL vidcd into DEFINITIONS. fuppos'd to be di-. **360 equal Parts, called Degrees ; and each Degree...and each Minute into 60 equal Parts, called Seconds,** &V. Any Portion of whofe Circumference is called an Arch, and is meafured by the Number of Degrees... | |
| John Ward (of Chester.) - Mathematics - 1747 - 480 pages
...the Secant ofthat Arch. IPlane I. Л Circle is DEFINITIONS. fuppos'd to be divided into 360 ecjual **Parts, called Degrees ; and each Degree into 60 equal...and each Minute into 60 equal Parts, called Seconds,** ÜV. Any Portion of whofe Circumference is called an Arch, and is meafured by the Number of Degrees... | |
| Thomas Simpson - Logarithms - 1748 - 77 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 Minute into 60 equal Parts, called Seconds,** or fecond Minutes, &c. B G 3. Any Part AB of H the Periphery of the Circle is called an Arch, and is... | |
| Benjamin Donne - Algebra - 1758 - 372 pages
...called a Day ; which Day they fubdivided into 24 equal Parts called Hours, and each of thefe again **into 60 equal Parts called Minutes, and each Minute into 60 equal Parts called Seconds, &c.** Further, the Time which is elapfed between the Inftant when the Sun is in the Equinox, or firlt Point... | |
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