Books Books 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. Elements of Surveying: With the Necessary Tables - Page 21
by Charles Davies - 1830 - 306 pages ## The Complete Mathematical and General Navigation Tables: Including ..., Volume 1

Thomas Kerigan - Nautical astronomy - 1828 - 776 pages
...hemisphere, and the other, the southern hemisphere. — The equator, like all other great circles, is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes } each minute into 60 equal parts, called seconds, and so on. The Meridian, of any place on the earth... ## An Introduction to Mensuration and Practical Geometry

John Bonnycastle - Geometry - 1829 - 252 pages
...the other two sides are called legs. PRACTICAL GEOMETRY. 21 D / -E B *47. The circumference of every circle is supposed to be divided into 360 equal parts,...each degree into 60 equal parts, called minutes; and so on. 48. The measure of any right-lined angle is an arc of a circle contained between the two lines... ## Elements of Geometry and Trigonometry: With an Easy and Concise System of ...

James Hale - Surveying - 1829 - 115 pages
...Supplement of the Arch FA. Fig. 10. 28. The Circumference of every Circle is supposed to be divided into 300 equal parts, called Degrees ; each Degree into 60 equal parts, called Minutes ; and these into Thirds, &,c. 29. The measure of an Angle is the Arch of a Circle contained between two Lines... ## Elements of Geometry: Being Chiefly a Selection from Playfair's Geometry

John Playfair - Geometry - 1829 - 186 pages
...Mathematicians suppose the circumference of every circle to be divided into 360 equal parts, called degrees, and each degree into 60 equal parts, called minutes, and each minute into £0 equal parts, called seconds, &c. Hence a right angle, being measured by a quadrant contains 90... ## First lessons in Plane Geometry. Together with an application of them to the ...

Francis Joseph Grund - Geometry, Plane - 1830 - 274 pages
...arcs of circles, described with any radius between their legs. The circumference is for this purpose divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each minute again into 60 equal parts, called seconds, &c. 16. The magnitude of an angle does not depend... ## A New and Easy Introduction to the Mathematics: Containing. A system of ...

Ira Wanzer - Arithmetic - 1831 - 396 pages
...Note 1. — This table is used by Astronomers, Navigators, &c. Note 2. — The circumference of every circle is supposed to be divided into 360 equal parts,...degrees; each degree into 60 equal parts, called minutes ; each minute into 60 seconds, and each second into 60 thirds, &c. 16. Of Particulars. 12 Particular... ## The Principles of Plane Trigonometry, Mensuration, Navigation and Surveying

Jeremiah Day - Measurement - 1831 - 394 pages
...measuring the latter, a circle is introduced. The periphery of every circle, whether great or small, is supposed to be divided into 360 equal parts called degrees, each degree into 60 minutes, each minute into 60 seconds, each second into 60 thirds, &c, marked with the characters °,... ## A System of Natural Philosophy: In which the Principles of Mechanics ...

John Lee Comstock - Physics - 1831 - 314 pages
...Constellation, and near the star a. Each of the 12 signs of the zodiac is divided into 30 smaller partSj called degrees; each degree into 60 equal parts, called minutes, and each minute into 60 parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign having... ## A System of Natural Philosophy: In which the Principles of Mechanics ...

John Lee Comstock - Physics - 1832 - 308 pages
...another constellation, and near the star a. Each of the 12 signs of the zodiac is divided into 30 smaller parts, called degrees ; each degree into 60 equal parts, called minutes, and each minute into 60 parts, called seconds, The division of the zodiac into signs, is of very ancient date, each sign having... 