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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 ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. "
A Treatise on Plane and Spherical Trigonometry: Including the Construction ... - Side 32
av Enoch Lewis - 1844 - 228 sider
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The Description and Use of the Globes, and the Orrery: To which is Prefixed ...

Joseph Harris - 1732 - 190 sider
...Pole is placed, and the opppfite one is the Southern Hemifphere. The Aftronomers divide all Circles into 360 equal Parts called 'Degrees, each Degree...60 equal Parts called Minutes, each Minute into 60 Seconds, &c. But befides this Divifion into Degrees, the Equir noftial is commonly divided into 24...
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An essay on mechanical geometry, explanatory of a set of models

Benjamin Donne - 1796
...calculating the proportion which angles bear to each other, fuppofe the circumference of every circle to be divided into 360 equal parts, called Degrees...parts, called minutes ; each minute into 60 equal parts named feconds, &c. Ar. B. Sometimes the circumference of a circle is called a circle; as when it is...
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A Complete System of Practical Arithmetic, with Various Branches in the ...

William Taylor - 1800 - 519 sider
...a' femi-eircle • half the diameter is called the 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...
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Mathematics: Compiled from the Best Authors and Intended to be the ..., Volum 1

Samuel Webber - 1801
...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 divided into 360 equal parts, called degrees ; and each degree into 60 minutes, each minute into do seconds, and so on. Hence a semicircle contains...
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A Summary of Geography and History, Both Ancient and Modern ...: With an ...

Alexander Adam - 1802 - 858 sider
...radii of the fame circle are always equal to one another. The circumference of every circle is fuppofed to be divided into 360 equal parts, called degrees ; each degree into 60 mi* ñutes \ each minute into 60 feccnds ; and thefe into thirds, fourths, &c. greater or ¡efs according...
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A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - 1804 - 168 sider
...the Centre ; and it divides the Circle into two equal parts, called Semicircles ; as AB or DE. 14. 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...
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The shipwright's vade-mecum [by D. Steel].

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...
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A Treatise on Plane and Spherical Trigonometry: With Their Most Useful ...

John Bonnycastle - 1806 - 419 sider
...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...each minute into 60 equal parts, called seconds ; &c. So that a semicircle, or half the circumference, contains 1 80 degrees ; and a quadrant, or fourth...
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A Treatise of Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - 1806 - 452 sider
...circumference into two equal parts called semicircles ; and is double the radius, as AB or DE. fig. 8. • 18. 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,...
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Elements of Natural Philosophy: Arranged Under the Following Heads: Matter ...

1808 - 272 sider
...Ecliptic. This circle we suppose to be divided into 12 equal parts, called Signs ; each sign . into 30 equal parts, called Degrees ; each degree into 60 equal parts called Minutes ; and every minute into 60 equal parts, called Seconds; so that a second is the 60th part of a minute...
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