 | Adrien Marie Legendre - Geometry - 1836 - 394 pages
...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 right angles, contains 180 degrees ; the quarter of the... | |
 | James Thomson (LL.D.) - Arithmetic - 1837 - 296 pages
...every circle is supposed to be 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. MISCELLANEOUS TABLE. 12 articles =1 dozen „ ,-. ( 12 dozen = 1 gross 6 6core or 120" = i.ong 20 articles... | |
 | Commissioners of National Education in Ireland - Measurement - 1837 - 290 pages
...circumference pf every circle is generally divided into 360 equal parts, called degrees ; and every degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. The angles are measured by the number of degrees contained in the arcs which subtend them ; thus, if... | |
 | Mrs. L. H. Tyler - Astronomy - 1837 - 302 pages
...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 : thus, 15° 10' 15" signifies five degrees, ten minutes,... | |
 | Charles Davies - Navigation - 1837 - 342 pages
...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 as a proper measure of angles, having their vertices... | |
 | Euclides - 1838 - 264 pages
...subtended by one of these, as the angular unit. Each degree is moreover supposed to be subdivided into 00 equal parts, called minutes; and each minute into 60 equal parts, called seconds, and so on. The angle subtended by any number of these will, therefore, be some fractional part of the angular... | |
 | John Lee Comstock - Astronomy - 1838 - 266 pages
...Definitions. All circles surrounding the earth are divided into 360 equal parts called degrees ; each degree is divided into 60 equal parts called minutes, and each minute into 60 parts called seconds. The signs by which these are indicated are 360° degrees, 60' minutes, and 30"... | |
 | Thomas Kerigan - Nautical astronomy - 1838 - 804 pages
...circles of the spheres, is divided into 360 equal parts, called degrees ; each degree is divided into GO equal parts, called minutes, and each minute into 60 equal parts, called seconds. ,57 The Meridian of any place on the earth, is a semicircle which passes through that place, cuts the... | |
 | Charles Davies - Surveying - 1839 - 376 pages
...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. PLANE TRIGONOMETRY. V As the circumference of a circle may be regarded as a proper measure of angles,... | |
 | Charles Davies - Surveying - 1839 - 376 pages
...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. PLANE TRIGONOMETRY \ As the circumference of a circle may be regarded as a proper measure of angles,... | |
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The circumference of every circle is supposed to be divided into 360 equal parts... 
