| Joseph Harris - Astronomical models - 1732 - 190 pages
...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 - 421 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... | |
| Robert Shirtcliffe - Gaging - 1740 - 283 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 - Mathematics - 1747 - 480 pages
...A Circle is -tJL vidcd into DEFINITIONS. fuppos'd to be di-. 360 equal Parts, called Degrees ; and **each Degree into 60 equal Parts, called Minutes ; 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... | |
| Thomas Simpson - Trigonometry - 1748 - 77 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... | |
| 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,... | |
| Joseph Fenn - Mathematics - 1769
...conceived to be divided into 360 equal parts, ivbicb are (ailed DEGREES ; and each of tbefe degrees **into 60 equal parts, called MINUTES ; and each minute into 60 equal parts,** called SECONDS 6fr. in con/equence of this bypotheßs, У the correfpondence eßabliflied between the... | |
| John Wright (mathematician.) - Perspective - 1772 - 251 pages
...fuppofed to be divided into 360 equal parts, called degrees; each degree ifr 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,... | |
| Benjamin Donne - Mathematics - 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... | |
| Robert Simson, Euclid - 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... | |
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