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The circumference of every circle is supposed 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.
Elements of Plane Trigonometry: And Their Application to the Measurement of ... - Página 14
por William Frothingham Bradbury - 1864
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## Sanitary, Heating and Ventilation Engineering: A General Reference ..., Volumen4

1918
...ie, it is vVr = | of a circumference. In order to obtain accurate measurements each degree is divided into 60 equal parts called minutes and each minute into 60 equal parts called seconds. Fig.. 67. Angular Measurement SOLIDS A solid has three dimensions — length, breadth, and thickness....
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## Carpentry and Contracting: A Practical Reference Work on Carpentry, Building ...

1919
...it is -sVir = i of a circumference. In order to obtain accurate measurements each degree is divided into 60 equal parts called minutes and each minute into 60 equal parts called seconds. Fig. 67. Angular Measurement SOLIDS A solid has three dimensions — length, breadth, and thickness....
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## Mechanical Drawing

John Simpson Reid - 1919 - 232 páginas
...right line that touches a circle without cutting it. 50. Cotangent is tangent of complement of arc. 51. Circumference of every circle is supposed to be divided into 360 equal parts termed Degrees; each degree into 60 minutes and each minute in 60 seconds. 52. Complement of an angle...
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## The Manufacture of Pulp and Paper: A Textbook of Modern Pulp and ..., Volumen1

...the angular measure of angles, and the table of angular measure was given in Arithmetic. The entire circle is supposed to be divided into 360 equal parts called degrees, the abbreviation for which is (°) ; each degree is then divided into 60 equal parts called minutes,...
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## Complete Geography

Harmon Bay Niver - 1922 - 327 páginas
...matter what size it may be, 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. The Equator and the meridian circles are called great circles, because they divide the earth into hemispheres....
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## Navigation: For Students Or Mariners Preparing to Take Examinations for ...

George Leonard Hosmer - 1926 - 307 páginas
...Before this can be done he must understand the geometry of the circle. In Chapter II we explained that the circumference of every circle is supposed to be divided into 360°. The number of degrees is always the same no matter what the size of the circle may be, but of course...
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## The New International Encyclopædia, Volumen5

1922
...the circumference of a circle is divided into 360 equal parts, called degrees; each degree into 00 equal parts, called minutes; and each minute into 60 equal parts, called seconds. Further divisions are better represented by decimal fractions. The circle ia also commonly divided...
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## United States Army Training Manual

...earth's meridian into another position, under the influence of an artificial magnetic field. Degrees. — The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; thus, a degree is onethree hundred and sixtieth of the circumference of any circle. A degree is divided...
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## American Practical Navigator: An Epitome of Navigation & Nautical Astronomy ...

Nathaniel Bowditch - 1931 - 852 páginas
...supposed to have their circumferences divided into 360 equal parts, cal.ed degrees; each degree is divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds; an arc is measured by the number of degrees, minutes, and seconds that it contains. A sphere is a solid...
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