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Bøker Bok 151160 av 188The circumference of every circle is supposed to be divided into 360 equal parts,...
" 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. "
Trigonometry, Plane and Spherical: With the Construction and Application of ... - Side 5
av Thomas Simpson - 1810 - 125 sider
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ELEMENTARY SYNTHETIC GEOMETRY OF THE POINT, LINE AND CIRCLE IN THE PLANE

N. F. DUPUIS, M.A., F.R.S.C. - 1894
...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...
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Plane Geometry

George D. Pettee - 1896 - 253 sider
...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...
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Elementary Algebra and Mensuration: Instruction Paper

American School (Lansing, Ill.), Carl Stephen Dow - 1902
...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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Mathematics

American School (Lansing, Ill.), Frank Wakeley Gunsaulus - 1903
...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...
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The Elements of Geometry

Walter Nelson Bush, John Bernard Clarke - 1905 - 355 sider
...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...
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School Arithmetic: Practical Book

John Marvin Colaw, Frank Williamson Duke - 1906 - 400 sider
...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,...
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Mechanics and Hydrostatics for Beginners

Sidney Luxton Loney - 1907 - 290 sider
...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...
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Practical Carpentry: Being a Complete Up to Date Explanation of Modern ...

William A. Radford - 1907
...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...
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Leveling ; Circular curves ; Stadia and plane-table surveying ; Topographic ...

International Correspondence Schools, International Textbook Company - 1907
...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...
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Complete Arithmetic, Parts 2 and #3

George E. Mercer - 1909
...B to C are arcs. The circumference of every circle is divided into 300 equal parts called degrees, each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. jJ5 of a circumference is called 1 degree of arc. J of a circumference, or 90 degrees, is called a...
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