 | Joseph Harris - Astronomical models - 1732 - 236 pages
...Pole is placed, and the opppfite one is the Southern Hemifphere. The Aftronomers divide all Circles into 360 equal Parts called 'Degrees, each Degree into 60 equal Parts called Minutes, each Minute into 60 Seconds, &c. But befides this Divifion into Degrees, the Equir noftial is commonly... | |
 | Philip Ronayne - Algebra - 1738 - 458 pages
...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 - 322 pages
...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... | |
 | John Ward (of Chester.) - Mathematics - 1747 - 516 pages
...^Trigonometry I. Л Circle is DEFINITIONS. fuppos'd 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 of whofe Circumference is called an Arch, and is meafured by the Number of Degrees... | |
 | Thomas Simpson - Logarithms - 1748 - 84 pages
...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, &c. B G 3. Any Part AB of H the Periphery of the Circle is called an Arch, and is... | |
 | John Barrow - Navigation - 1750 - 496 pages
...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, &c. which are written in this manner 51°, 16', 14", which fignifies 51 Degrees 1 6 Minutes, 14 Seconds.... | |
 | Joseph Harris - 1757 - 242 pages
...Pole is placed, and the oppofite one is the Southern Hemifphere. The Aftronomers divide all Circles into 360 equal Parts, called Degrees, each Degree into 60 equal Parts, called Minutes, each Minute into 60 Seconds, &c. But befides this Divifion into Degrees, the Equinoctial is alfo divided... | |
 | Benjamin Donne - Algebra - 1758 - 428 pages
...be 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. 60 Seconds-) 60 Minutes 24 Hours 365 Days 366 Days Minute Hour Day I i Common lear Li Leap-Year... | |
 | Thomas Simpson - Algebra - 1767 - 424 pages
...The periphery of every circle is fuppofed to be 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 feconds, or-fecond minutes, &c. Any part of the periphery is called an arch, and is meafured by the... | |
 | John Wright (Mathematician) - Perspective - 1772 - 298 pages
...fuppofed to be divided into 360 equal parts, called degrees; each degree i«- fuppofed to be divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called feconds, &c. 5. Any angle HRB at the centre of a circle, is faid to be an angle of as many degrees,... | |
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The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. 
