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Bøker Bok 110 av 180The circumference of every circle is supposed to be divided into 360 equal parts,...
" 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. "
Trigonometry, Plane and Spherical: With the Construction and Application of ... - Side 5
av Thomas Simpson - 1810 - 125 sider
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A Treatise of Algebra in Two Books: The First Treating of the Arithmetical ...

Philip Ronayne - 1738 - 421 sider
...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...
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The Theory and Practice of Gauging: Demonstrated in a Short and Easy Method ...

Robert Shirtcliffe - 1740 - 283 sider
...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...
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The Young Mathematician's Guide: Being a Plain and Easy Introduction to the ...

John Ward - 1747 - 480 sider
...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...
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The Young Mathematician's Guide: Being a Plain and Easy Introduction to the ...

John Ward (of Chester.) - 1747 - 480 sider
...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...
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A New Introduction to the Mathematicks: Being Essays on Vulgar and Decimal ...

Benjamin Donne - 1758 - 372 sider
...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...
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Instructions Given in the Drawing School Established by the Dublin Society ...

Joseph Fenn - 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 arches, У the...
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Instructions Given in the Drawing School Established by the Dublin Society ...

Joseph Fenn - 1769
...to be divided into 360 equal parts, -which are callea DEGREES ¡ and each of tbefe degrees into ¿o equal parts, called MINUTES ; and each minute into 60 equal parts, called SECONDS &c. in confequence of ibis bypotheßs, У the correjpondence eßablijhed bet-ween the arches, У the...
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The Young Mathematician's Guide: Being a Plain and Easy Introduction to the ...

John Ward - 1771 - 480 sider
...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...and each Minute into 60 equal Parts, called Seconds, &c. Any Portion of whc/e Circumference is called an Arch, and is mcaof Degrees it contains.' 2. A Chord...
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Elements of Trigonometry, Plane and Spherical: With The Principles of ...

John Wright (mathematician.) - 1772 - 251 sider
...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,...
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The Geometrician: Containing Essays on Plane Geometry, and Trigonometry ...

Benjamin Donne - 1775 - 159 sider
...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 are fubtended by...
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