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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 and Spherical Trigonometry: With Their Applications to ... - Página 4
por Olinthus Gregory - 1816 - 244 páginas
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## A new and complete epitome of practical navigation

John William Norie - 1852
...within the circumference. The circumference of every circle is usually supposed to be divided into 860 equal parts, called DEGREES ; each degree into 60 equal parts, called MINUTES ; each minute into 60 equal parts, called SECONDS ; and so on. Degrees, minutes, and seconds, are thus expressed,...
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## High school arithmetic

James B. Dodd - 1853
...Circumference, and the Measure of Angles. § 393. The Circumference of every circle 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. Degrees, minutes, and seconds, are denoted thus...
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## Mathematical Dictionary and Cyclopedia of Mathematical Science: Comprising ...

Charles Davies, William Guy Peck - 1855 - 592 páginas
...the purpose of comparing angles in this system of measurement, the entire 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. The right angle contains 90 degrees. The radius...
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## Elements of geometry and trigonometry: with applications in mensuration

1855 - 324 páginas
...The circumference of a 'circle is used for the measurement of angles- For this purpose it is divided into 360 equal parts called degrees, each degree into 60 equal parts called ninutes, and each minute into 60 equal parts called secondsThe degrees, minutes, and seconds are marked...
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## Mathematical Dictionary and Cyclopedia of Mathematical Science: Comprising ...

Charles Davies, William Guy Peck - 1855 - 592 páginas
...purpose of comparing angles in this system of measurement, the entire circumference 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. The right angle contains 90 degrees. The radius...
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## A High-school Astronomy: In which the Descriptive, Physical, and Practical ...

Hiram Mattison - 1856 - 240 páginas
...sometimes called radiations or radiance. All circles, whether great or small, are 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. They are marked respectively thus: Degrees (°),...
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## Mathematical Dictionary and Cyclopedia of Mathematical Science: Comprising ...

Charles Davies, William Guy Peck - 1857 - 592 páginas
...purposes of trigonometrical computation, each quadrant or right angle is supposed to be divided into 90 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; each minute into 60 equal parts, called seconds ; so that a right angle contains 32400 seconds. The complement...
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## Bourdon's Arithmetic: Containing a Discussion of the Theory of Numbers

Bourdon (M., Louis Pierre Marie) - 1858 - 248 páginas
...within, called the centre. In all the scientific works in this country, the circumference is divided into 360 equal parts, called degrees (°) ; each degree into 60 equal parts, called minutes (,); each minute into 60 equal parts, called seconds ("). This is called the sexagesimal division. When the French...
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## A Treatise on Plane and Spherical Trigonometry: And on Trigonometrical ...

John Hymers - 1858 - 232 páginas
...of being determined geometrically, and furnishes an invariable standard of angular measure) into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds; then an angle is expressed by the number of degrees, minutes,...
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## A Treatise on Practical Mensuration

Anthony Nesbit - 1859 - 450 páginas
...which principally depend on the properties of the circle, and circular arcs. Every circle is divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds, and so on by a sexigesimal division into thirds, fourths,...
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