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" ... is supposed to be divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are designated respectively, by the characters ° ' ". For example, ten degrees, eighteen minutes, and... "
The Geometrician: Containing Essays on Plane Geometry, and Trigonometry ... - Page 60
by Benjamin Donne - 1775 - 159 pages
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The Practical Navigator, and Seaman's New Daily Assistant. ...

John Hamilton Moore - Nautical astronomy - 1791 - 296 pages
...Circles, whether great or fmall, are 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. A Semicircle is 180 Degrees, and a Quadrant contains 90 Degrees. A Right Angle contains 90 Degrees...
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A Complete Treatise on Practical Mathematics: Including the Nature and Use ...

John McGregor (teacher of mathematics.) - Mathematics - 1792 - 431 pages
...trigonometry. The circumference of any circle, is divided into 360 equal parts, called degrees, and each degree into 60 equal parts, called minutes, and each minute into 60 equal parts, called féconds, and fo on. JVi/f, Degrees are frequently marked °, and minutes '. Thus, 30 degrees, 14 minutes,...
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A Treatise of Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - Surveying - 1795 - 319 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, and thefe into Thirds, Fourths, &c. thefe Parts being greater or lefs as the Radius is. 19. A Chord...
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Trigonometry, Plane and Spherical: With the Construction and Application of ...

Thomas Simpson - Trigonometry - 1799 - 79 pages
...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 feconds, or fecond minutes, &c. ' B a 3- Any HK/ 3. Any part AB of the periphery of the circle is called...
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A Complete System of Practical Arithmetic, with Various Branches in the ...

William Taylor (teacher of the mathematics.) - Arithmetic - 1800 - 519 pages
...Radius. 8. The circumference of every circle is divided into 360 equal parts called Degrees ; each degree into 60 equal parts, called Minutes ; and each minute into 60 equal parts, called Seconds, &c. Any part of the the circumference is called an Arch. 9. The Chord of an arch, is a right line joining...
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Exercises on the globes: interspersed with some historical, biographical ...

William Butler - Astronomy - 1803 - 381 pages
...obferve the different altitudes of the fame ftar at the two extremities of that diftance. Each degree is divided into 60 equal parts called minutes ; and each minute into 60 feconds, Sec. Degrees are marked with a fmall cypher over them ("), minutes with one dam ( ), andfeeonds...
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A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - Geometry - 1804 - 168 pages
...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 ; jktl these into Thirds, &c. Ifote. .-Since all Circles are divided into the same number of Degrees,...
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The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - Trigonometry - 1804
...circumference of a 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 feconds, &c. And as many degrees, minutes, feconds, &c. as are contained in any arch, of fo many degrees,...
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A Treatise of Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - Surveying - 1806 - 452 pages
...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, fourths, &c. these parts being greater or less as the radius is. 19. A chord...
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The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1806 - 518 pages
...circumference of a circle is supposed to be divided info 360 equal parts called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, i: >.. And as many degrees, minutes, seconds, &c. as are contained in any arch, of so many degrees,...
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