| William Findlay Shunk - Railroad engineering - 1886 - 378 pages
...inclndes 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 °, 1, ": thus the expression 7° 221 33"... | |
| 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
...practical purposes 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.** 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
...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
...the circumference of a circle 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.** To find the diameter when the circumference is given. RULE. Divide the circumference by 3.1416. Example.... | |
| 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
...practical purposes 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.** 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... | |
| American School (Lansing, Ill.) - Algebra - 1902 - 80 pages
...degrees is measured by ^ of the circumference. 185. For accurate measurement each degree is divided **into 60 equal parts called minutes and each minute into 60 equal parts** ('ailed seconds. The symbols of degrees, minutes and seconds are °, ', ", respectively. To express... | |
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