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" 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. "
Mathematical Dictionary and Cyclopedia of Mathematical Science: Comprising ... - Page 26
by Charles Davies - 1872 - 592 pages
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The Elements of Euclid: viz. the first six books, together with the eleventh ...

Euclid, Robert Simson - Euclid's Elements - 1806 - 518 pages
...n. The 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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A Treatise of Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - Surveying - 1806 - 452 pages
...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, fourths, &c. these parts being greater or less as the radius is. 19. A chord...
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A Treatise on Plane and Spherical Trigonometry: With Their Most Useful ...

John Bonnycastle - Trigonometry - 1806 - 419 pages
...contained between its two legs, and having the angular point for its centre. Every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; each minute into 60 equal parts, called seconds ; &c. So that a semicircle, or half the circumference,...
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The New Practical Navigator: Being a Complete Epitome of Navigation to which ...

John Hamilton Moore - Nautical astronomy - 1807 - 328 pages
...actually, or fuppofed to have, their circumference divided 11110360 equal parts, called degrees, and each degree into 60 equal parts, called minutes, and each minute into 60 equal parts, called féconds, and fu on into thirds, fourths, &c. All angles are msafurcd by an arch of a circle, defcribed...
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A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - Surveying - 1808 - 168 pages
...Circumference of every Circle is supposcfl 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, 8tc. Note. Since all Circles are divided into the same number of Degrees,...
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Elements of Natural Philosophy: Arranged Under the Following Heads: Matter ...

Physics - 1808 - 272 pages
...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 ; a...
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Astronomy Explained Upon Sir Isaac Newton's Principles, and Made Easy to ...

James Ferguson - Science - 1809 - 533 pages
...ecliptic. tic. 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 each minute into 60 into 60 equal parts, called seconds : so that a second Plate I. is the 60th part of a minute ; a minute...
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A Plain Elementary and Practical System of Natural Experimental Philosophy ...

John Ewing - Physics - 1809 - 538 pages
...another. Every circle, whether large or small, is supposed to be divided into 360 equal parts, which are called degrees, each degree into 60 equal parts called minutes, and each minute into 60 seconds, and so on in a sixagesimal division as far as you please. If the earth be supposed to turn...
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An Introduction to the Theory and Practice of Plane and Spherical ...

Thomas Keith - Navigation - 1810 - 420 pages
...the arc DE is the measure of the angle ABC. (H) The circumference of every circle is supposed to be divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds. The angles are measured by the number of "egrees cut...
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The modern preceptor or a general course of education: containing ..., Volume 2

John Dougall - Education - 1810 - 580 pages
...other four watches. In modern Europe the day is divided into 2* equal parts called hours, each hour into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. It has been found by experiment at London, in a spot elevated 113 feet above the level of the sea,...
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