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

Benjamin Greenleaf - Geometry - 1861 - 628 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,... ## A practical treatise on ... land and engineering surveying, Volume 34

Henry S. Merrett - 1863 - 476 pages
...described on the angular point, but by certain lines described about that arc. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60 minutes ; each minute into 60 seconds ; and so on. The sine of three angles of every triangle, or two... ## A Practical Treatise on the Science of Land and Engineering Surveying ...

Henry S. Merrett - 1863 - 428 pages
...described on the angular point, but by certain lines described about that arc. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60 minutes ; each minute into 60 seconds ; and so on. The sine of three angles of every triangle, or two... ## 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.... ## Primary Elements of Plane and Solid Geometry: For Schools and Academies

Evan Wilhelm Evans - Geometry - 1862 - 116 pages
...are may be taken as the measure of its subtended angle. To this end the circumference is conceived to be divided into 360 equal parts, called degrees, each degree into 60 minutes, and each minute into 60 seconds. Then whatever number of degrees, etc., an arc contains, the... ## A Written Arithmetic, for Common and Higher Schools: To which is Adapted a ...

George Augustus Walton - Arithmetic - 1864 - 362 pages
...circumference, through the centre, to an opposite point, is called a Diameter. 188. The circumference of any circle is supposed to be divided into 360 equal parts, called Degrees, each degree into 60 Minutes, and each minute into 60 Seconds. TABLE. 60 seconds (") = 1 minute, marked '. 60' =1 degree,... ## A Written Arithmetic, for Common and Higher Schools: To which is Adapted a ...

George Augustus Walton - Arithmetic - 1864 - 368 pages
...circumference, through the centre, to an opposite foiat, is called a Diameter. 188. The circumference of any circle is supposed to be divided into 360 equal parts, called Degrees, each degree into 60 Minutes, and each minute into 60 Seconds. TABLE. marked '. u о 60 seconds (") = 1 minute, 60' =1 degree,... ## 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... ## Elements of Plane and Spherical Trigonometry: With Their Applications to ...

Elias Loomis - Trigonometry - 1868 - 380 pages
...plane triangles; Spherical Trigonometry treats of spherical triangles. (19.) The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 6O minutes, and each minute into 60 seconds. Degrees, minutes, and seconds are designated by the characters... 