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 ; and each minute into 60 equal parts, called seconds.
Elements of Surveying: Including a Description of the Instruments and the ... - Page 32
by Charles Davies - 1837 - 249 pages

## Elements of Plane and Spherical Trigonometry: With Practical Applications

Benjamin Greenleaf - Geometry - 1861 - 638 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts culled seconds ; then an angle is expressed by the number of degrees,...

## Elements of Geometry and Trigonometry: With Practical Applications

Benjamin Greenleaf - Geometry - 1862 - 518 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees,...

## Mathematics for Practical Men: Being a Common-place Book of Principles ...

Olinthus Gregory - 1863 - 482 pages
...(See the next figure.) 3. The circumference of a circle is supposed to be divided or to be divisible into. 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each of these into 60 equal parts, called seconds ; and so on to the minutest possible subdivisions....

## Elements of Plane Trigonometry: And Their Application to the Measurement of ...

William Frothingham Bradbury - Plane trigonometry - 1864 - 324 pages
...from a point within, called the centre ; as ABD E. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees (°),...and each minute into 60 equal parts, called seconds ( "). 34. The RADIUS of a circle is a line drawn from the centre to the circumference ; as C B. All...

## Elements of Geometry and Trigonometry

C. Davies - 1867 - 342 pages
...GEOMETRYDefinitions 28 The circumference of a circle is used for the measurement of angles- For this purpose it is divided into 360 equal parts called degrees, each degree into 60 equal parts called ninutes, and each minute into 60 equal parts called secondsThe degrees, minutes, and seconds are marked...

## Smith's Illustrated Astronomy: Designed for the Use of the Public Or Common ...

Asa Smith - 1868 - 84 pages
...— The boundary of a circle. The circumference of every circle ˇв supposed to be divided into and equal parts, called degrees ; each degree into 60...and each minute into 60 equal parts, called seconds. Circumpolar Start.— Those stars which revolve around the pole without passing below the horizon....

## Elements of Geometry and Trigonometry from the Works of A.M. Legendre ...

Charles Davies, Adrien Marie Legendre - Geometry - 1869 - 470 pages
...the quadrant is divided into 90 equal parts, each of which k called a degree ; each degree into 00 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are denoted by the symbols °, ', ". Thus, the expression 7° 22' 33",...

## Elements of Geometry and Trigonometry: With Practical Applications

Benjamin Greenleaf - 1869 - 516 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees,...