 | Euclid - 1835 - 540 pages
...and BC, in A and C ; the arch AC is called the measure of the angle ABC. II. The circumference of a 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,... | |
 | William Grier - Mechanical engineering - 1836 - 384 pages
...other two on the two sides, that which stands at the angular point is read in the middle. Thus DAE. 57. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; and each degree into 60 minutes, each minute into 60 seconds, and so on. Hence a semicircle contains... | |
 | Adrien Marie Legendre - Geometry - 1836 - 394 pages
...CIRCUMFERENCE. I. For the purposes of trigonometrical calculation, the cir cumference of the circle 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. The semicircumference, or the measure of two... | |
 | James Thomson (LL.D.) - Arithmetic - 1837 - 296 pages
...is/img, while the months after it follow the rule. r 48 TABLES. TABLE OF THE DIVISION OF THE CIRCLE. The circumference of every circle is supposed to be...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.... | |
 | Mrs. L. H. Tyler - Astronomy - 1837 - 302 pages
...of the plane of a circle. (21.) DBF. 4. Every circle, from the smallest to the largest, is conceived 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. These divisions are usually expressed by signs... | |
 | Hugh Murray - Commercial geography - 1837 - 612 pages
...sphere, 7916 miles in diameter, and consequently nearly 24,870 miles in circumference. In geometry, the circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each of these into 60 equal parts, called minutes, and so on. A degree, therefore, of any circle... | |
 | Charles Davies - Navigation - 1837 - 342 pages
...accuracy. 41. For the purposes of trigonometrical calculations, the circumference of the circle 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. As the circumference of a circle may be regarded... | |
 | Luther Ainsworth - Arithmetic - 1837 - 306 pages
...many equal parts is every circle supposed to be divided ? A. Every circle, whether great or small, is supposed to be divided into 360 equal parts, called degrees. Each degree is also subdivided into 60 minutes, and each minute into 60 second!*. 245 MENSURATION OF SUPERFICIES.... | |
 | Jeremiah Day - Geometry - 1838 - 416 pages
...measuring the latter, a circle is introduced. The periphery of every circle, whether great or small, is supposed to be divided into 360 equal parts called degrees, each degree into 60 minutes, each minute into 60 seconds, each second into 60 thirds, &c., marked with the characters °,... | |
 | Charles Davies - Arithmetic - 1838 - 292 pages
...used in estimating latitude and longitude, and also in measuring the motions of the heavenly bodies. Every circle is supposed to be divided into 360 equal parts, called degrees. TABLE. 60 seconds " make 1 minute, marked '. 60 minutes - - 1 degree, - - °. * 30 degrees - - 1 sign,... | |
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The circumference of every circle is supposed to be divided into 360 equal parts, called degrees... 
