 | Albert Newton Raub - 1894 - 200 páginas
...AD, is 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... | |
 | Nathan Fellowes Dupuis - 1894 - 313 páginas
...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... | |
 | George D. Pettee - 1896 - 272 páginas
...of a circle and the angular space about the centre are divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, and each minute into CO equal parts called seconds. Since central angles vary as their intercepted arcs, any central angle... | |
 | American School (Lansing, Ill.) - 1902 - 80 páginas
...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... | |
 | American School (Chicago, Ill.) - 1903 - 426 páginas
...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 called seconds. The symbols of degrees, minutes and seconds are °, ', ", respectively. To express 23 degrees, 47 minutes... | |
 | Walter Nelson Bush, John Bernard Clarke - 1905 - 378 páginas
...measured by its intercepted arc. The 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. For brevity, an angle measured by an arc of 1° is called an angle of 1° ; etc. NOTE. — This division... | |
 | John Marvin Colaw, Frank Williamson Duke - 1906 - 408 páginas
...passing around the earth on its surface ? 444. In measuring circumferences, each degree is divided in 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds. In this measure, degrees, minutes, and seconds are written with symbols. Thus, 3 degrees, 25 minutes,... | |
 | Sidney Luxton Loney - 1907 - 332 páginas
...measurement on account of its size. We therefore subdivide a right angle into 90 equal parts called degrees, each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. The symbols used for a degree, a minute, and a second are 1°, 1', and 1". Thus 10° 11' 12" means... | |
 | 1907 - 710 páginas
...measuring arc is a part 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. The magnitude of an angle is then expressed by the number of degrees, minutes, and seconds that its... | |
 | William A. Radford - 1907 - 332 páginas
...divided by mathematicians into 360 equal parts, called degrees ; each degree being again subdivided into 60 equal parts, called minutes, and each minute into 60 equal parts called seconds. Hence, it follows that the arc of a quarter circle or quadrant includes 90 degrees; that is, one-fourth... | |
| |
The circumference of every circle is supposed to be 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 these into thirds, &c. 
