 | George Albert Wentworth - Arithmetic - 1886 - 392 pages
...about a point in a plane is divided into 360 equal parts, called degrees. Each degree is subdivided into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds. Likewise the circumference of a circle is divided into 3GO equal arcs, each corresponding to an angle... | |
 | Charles Davies - Geometry - 1886 - 352 pages
...measure. ment of angles. For this purpose it is divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, and each minute into 60 equal pans called second s. The degrees, minutes, and seconds are marked thus ° ' " ; and 9° 18' 16", are... | |
 | Nathaniel Bowditch - Nautical astronomy - 1888 - 704 pages
...supposed to have their circumference 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 so on into thirds, fourths, Jtc. ; and an arc is said to be of as many degrees as it contains... | |
 | Nathan Fellowes Dupuis - Geometry - 1889 - 370 pages
...right angle. For practical purposes the right angle is divided into 90 equal parts called degrees ; each degree is divided into 60 equal parts called...and each minute into 60 equal parts called seconds. 20 seconds and six-sevenths of a second, follows : — 51° 25' 42f . This is denoted as Theorem. —... | |
 | William Findlay Shunk - Railroad engineering - 1890 - 360 pages
...which includes one-quarter of the circle, and is the measure of a right angle. Each degree is further divided into 60 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"... | |
 | John H. Macke - Carpet laying - 1891 - 244 pages
...practical purposes, the circumference of a circle is divided into 360 equal parts, called degrees; each degree is divided into 60 equal parts, called...and each minute into 60 equal parts, called seconds. To find the diameter when the circumference is given. RULE. Divide the circumference by 3.1416. Example.... | |
 | Sidney Luxton Loney - Plane trigonometry - 1893 - 534 pages
...the Sexagesimal system of measurement a right angle is divided into 90 equal parts called Degrees. Each degree is divided into 60 equal parts called...and each minute into 60 equal parts called Seconds. The symbols 1°, Г, and 1" are used to denote a degree, a minute, and a second respectively. Thus... | |
 | William Shaffer Hall - Measurement - 1893 - 88 pages
...unit is a right angle. The right angle is divided into 90 equal parts called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. Angles at the centre of a circle have the same ratio as the arcs which are subtended by them (Ww. Geom.,... | |
 | Nathan Fellowes Dupuis - Geometry - 1894 - 313 pages
...right angle. For practical purposes the right angle is divided into 90 equal parts called degrees ; each degree is divided into 60 equal parts called...and each minute into 60 equal parts called seconds. 20 seconds and six-sevenths of a second, follows :— 51° 25' 42f". This is denoted as 42°. Theorem... | |
 | Albert Newton Raub - Arithmetic - 1894 - 200 pages
...called a Diameter. 129. Every circumference is divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes ; 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... | |
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Every circumference of a. circle, whether the circle be large or small, is supposed to be 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. 
