| 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;... | |
| 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... | |
| 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... | |
| Thomas Simpson - Algebra - 1800 - 400 pages
...fuppofed divided into 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 into 60** cgual parts, called minutes, and each minute into 60 equal parts, called feconds, or fccond minutes,... | |
| Mathematics - 1801 - 426 pages
...the two sides, 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...equal parts, called degrees ; and each degree into 60** minutes, each minute into do seconds, and so on. Hence a semicircle contains 1 80 degrees, and a quadrant... | |
| David Steel - 1805
...centre to the circumference of a circle, is called a Radius. All the radii of the same circle are equal. **The circumference of every circle is supposed to be divided into 360** parts, called degrees; each degree into 60 equal parts, called minutei; and each minute into 60 equal... | |
| John Bonnycastle - Trigonometry - 1806 - 419 pages
...by an arc of a circle contained between its two legs, and having the angular point for its centre. **Every circle is supposed to be divided into 360 equal parts, called degrees** ; each degree into 60 equal parts, called minutes ; each minute into 60 equal parts, called seconds... | |
| Benjamin Workman - Geography - 1809 - 191 pages
...unequally. LeflVr circles are coai* monly parallel to fome great circle7. Every circle is fuppofed **to be divided into 360 equal parts, called Degrees...and each degree into 60 equal parts, called Minutes** ; each minute in 60 Seconds, £c. 8. A degree of a great circle, on the earth, contains 60 geographical... | |
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