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

Hand-book of the Terrestrial Globe, Or, Guide to Fitz's New Method of ...

Ellen Eliza Fitz - Globes - 1876 - 138 pages
...angles, the circumference of a circle is divided into 360 equal parts, called degrees (marked °), each degree into 60 equal parts, called minutes ('),...and each minute into 60 equal parts, called seconds ("). Then the number of degrees, minutes, and seconds, in the arc intercepted by the sides of an angle,...

Elements of Plane and Spherical Trigonometry: With Practical Applications

Benjamin Greenleaf - Trigonometry - 1876 - 204 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,...

The yachtsman's handybook for sea use

James Rosser - 1877 - 174 pages
...ARC is any portion (long or short) of the circumference, as AF, or B r. The circumference of every circle is divided into 360 equal parts, called DEGREES...and each minute into 60 equal parts called seconds; which are respectively marked ° ' ". (See p. 1, Table A.) Since the circumference of a circle contains...

The Elementary Arithmetic: Oral and Written

Albert Newton Raub - Arithmetic - 1877 - 176 pages
...the centre and limited by the circumference, as AD, is called a Diameter. 129. Every circumference is divided into 360 equal parts, called degrees; each...and each minute into 60 equal parts, called seconds. TABLE. 60 seconds ( " ) =1 minute, ( ' ). 60 minutes =1 degree, (°). 30 degrees = 1 sign, s. 12 signs...

The New Normal Written Arithmetic: Designed for Common Schools, Normal ...

Edward Brooks - Arithmetic - 1877 - 444 pages
...the circumference is called a quadrant. 290. For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into GO equal parts, called seconds. 291. Any angle having its vertex at the centre, is...

The Normal Higher Arithmetic: Designed for Common Schools, High Schools ...

Edward Brooks - Arithmetic - 1877 - 560 pages
...the circumference is called a quadrant. 399. For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each minute into <50 equal parts called seconds. 400. Any angle having its vertex at the centre, is...

The New Normal Written Arithmetic: Designed for Common Schools, Normal ...

Edward Brooks - Arithmetic - 1877 - 438 pages
...the circumference is called a quadrant. * 290. For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 2O1. Any angle having its vertex at the centre, is...

The Normal Union Arithmetic: Graded Course, Volume 2

Edward Brooks - Arithmetic - 1877 - 250 pages
...the circumference is called a quadrant. , 290. For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 291. Any angle having its vertex at the centre, is...