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" The circumference of every circle is supposed to be divided into 360 equal parts, called degrees... "
An introduction to the theory ... of plane and spherical trigonometry ... - Side 23
av Thomas Keith - 1839
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A Complete System of Practical Arithmetic, with Various Branches in the ...

William Taylor (teacher of the mathematics.) - 1800 - 556 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

1801 - 446 sider
...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 - 914 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 - 226 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 - 392 sider
...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 of Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - 1806 - 486 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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Mathematics: Compiled from the Best Authors, and Intended to be the ..., Volum 1

Samuel Webber - 1808 - 466 sider
...and the other two on the two sides, that, which stands at the angular point, is read in the middle. 56. 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 60 seconds, and so on. Hence a semicircle contains...
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Trigonometry, Plane and Spherical: With the Construction and Application of ...

Thomas Simpson - 1810 - 168 sider
...and about the circle be supposed divided into some assigned number of equal parts. 2. The periphery 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 Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - 1810 - 554 sider
...meeting BA, BC in A, C; the arch AC is called the measure of the angle ABC. II. The circumference of a 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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A pocket encyclopædia, or library of general knowledge

Edward Augustus Kendall - 1811 - 462 sider
...measured by the arcs of a circle, contained between the two legs, having the angular point for its centre. Ev.ery circle is supposed to be divided into 360 equal...parts, called degrees ; each degree into 60 equal parti, called minutes $ each minute into' 60 equal parts, called seconds. " An angle is said to be...
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