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. An Elementary Geometry and Trigonometry - Page 11
by William Frothingham Bradbury - 1873 - 238 pages ## Practical Mathematics: Instruction Paper, Volume 3

Glenn Moody Hobbs - 1912 - 100 pages
...protractor, Fig. 14, showing degrees and fractions of degrees, is necessary. Each degree is divided into 60 equal parts called minutes, ', and each minute into 60 equal parts called seconds, ". Thus to represent an angle of 23 degrees, 47 minutes, and 9 seconds, write 23° 47' 9". The relations... ## New York State Arithmetic: Years Five, Six, Seven, and Eight

George Albert Wentworth, David Eugene Smith - Arithmetic - 1912 - 374 pages
...order to be done 10 min. before the close of the class period ? DENOMINATE NUMBERS 134. Measuring Arcs. The circumference of every circle is divided into 360 equal parts called degrees. Corresponding to every arc, like AB in the figure, is an angle at the center, A OB. Therefore to every... ## Intermediate Arithmetic, Parts 2-3

George E. Mercer, Mabel Bonsall - Arithmetic - 1914 - 324 pages
...equally distant from the center. Any part of a circumference is an arc. A to B and B to C are arcs. The circumference of every circle is divided into 360 equal parts called degrees, each degree into i50 equal parts called minutes, and each minute into 60 equal parts called seconds. 5J^ of a circumference... ## Plane Trigonometry with Tables

Claude Irwin Palmer, Charles Wilbur Leigh - Plane trigonometry - 1914 - 308 pages
...turning. The right angle is divided into 90 equal parts called degrees (°), each degree is divided into 60 equal parts called minutes ('), and each minute into 60 equal parts called seconds ("). Starting from any position as initial side, it is evident that, for each position of the terminal... ## Elementary Geography

Harmon Bay Niver - Geography - 1915 - 418 pages
...matter what size it may be, is divided into 360 equal parts called degrees. Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. The Equator and the meridian circles are called great circles, because they divide the earth into hemispheres.... ## Standard Handbook for Mechanical Engineers

Mechanical engineering - 1916 - 1826 pages
...MEASURE. (360 degrees = 1 revolution.) 1 degree = 1° = Ho of a right angle. The degree is usually divided into 60 equal parts called minutes ('), and each minute into 60 equal parts called seconds ("); while the second is subdivided decimally. But for many purposes it is more convenient to divide... ## Mechanical Drawing: Instruction Paper, Part 2

Ervin Kenison - Mechanical drawing - 1916 - 44 pages
...ie, it is /A = i of a circumference. In order to obtain accurate measurements each degree is divided into 60 equal parts called minutes and each minute into 60 equal parts called seconds. /esi I8O Fig. 67. Angular Measurement SOLIDS A solid has three dimensions — length, breadth, and... ## Plane and Spherical Trigonometry

Claude Irwin Palmer, Charles Wilbur Leigh - Logarithms - 1916 - 348 pages
...turning. The right angle is divided into 90 equal parts called degrees (°), each degree is divided into 60 equal parts called minutes ('), and each minute into 60 equal parts called seconds (")• Starting from any position as initial side, it is evident that, for each position of the terminal... ## Mechanical Engineers' Handbook

Lionel Simeon Marks - Mechanical engineering - 1916 - 1918 pages
...MEAAUKE. (360 degrees - 1 revolution.) 1 degree Ie ' » of a right angle. The degree is usually divide«! into 60 equal parts called minutes ('), and each minute into 60 equal parts called seconds ("); while the second is subdivided decimally. Rut for many purposes it is more convenient to divide... 