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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.
An Elementary Geometry and Trigonometry - Page 11
by William Frothingham Bradbury - 1873 - 238 pages

## The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - Surveying - 1811 - 592 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 caled seconds, and these into thirds, fourths, &c. these parts being greater or less as the radius...

## A Treatise of Plane and Spherical Trigonometry: In Theory and Practice ...

Francis Nichols - Plane trigonometry - 1811 - 128 pages
...other circle, subtending the same angle ABC. 5. COR. 4. Hence, if a circle of any radius whatever be divided into 360 equal parts, called degrees, each degree into 60 equal parts, called minutes; each minute into 6O equal parts, called seconds, &c., the number of degrees, minutes, and seconds,...

## A New Treatise on the Use of the Globes, Or, A Philosophical View of the ...

Thomas Keith - Astronomy - 1811 - 386 pages
...year 1804, was 13° 14' 43" and its declination 80° "15' 44" north. \$ 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. ; a degree is, therefore, only a relative idea,...

## A pocket encyclopędia, or library of general knowledge

Edward Augustus Kendall - 1811 - 460 pages
...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...

## A New and Complete System of Arithmetic: Intended for the Use of Schools and ...

Caleb Alexander - Arithmetic - 1813 - 144 pages
...circumference of every circle, is supposed tobe divided into 360 equal parts, called degree»; and each degree, into 60 equal parts, called minutes;...each minute, into 60 equal parts, called seconds, and these into thirds, fourtUs, &c. 14. Parallel lines are equidistant from each other. 15 A figure,...

## A System of Natural Philosophy: in which the Principles of Mechanics ...

John Lee Comstock - Physics - 1813 - 442 pages
...constellation, and near trfB star a. 762. 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...

## An Easy Introduction to the Mathematics: In which the Theory and ..., Volume 2

Charles Butler - Mathematics - 1814 - 528 pages
...angle. It is usual to divide the whole circumference into 360 equal parts called degrees, to subdivide each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, &c. wherefore, if an angle at the centre be subtended by an arc which consists of suppose 30 degrees,...

## The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - Surveying - 1814 - 556 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 tiiese into thirds, fourths, &c. these parts being greater or less as the radius is.17. A chord...