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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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A New System of Modern Geography, Or, A View of the Present State of the World

Sidney Edwards Morse - 1822 - 676 páginas
...diameter is a straight line drawn through the centre from one side of the circumference to the other. The circumference of every circle is supposed to be...equal parts, called degrees ; each degree into 60 minutes ; each minute into 60 seconds. An arc of a circle is part of its circumference. All angles...
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Euclid's Elements of Geometry: The Six First Books. To which are Added ...

Euclid, Rev. John Allen - 1822 - 494 páginas
...tailed acute.* * Mathematicians have supposed the whole circumference of a circle to be divided in 360 equal parts, called degrees, each degree into...called minutes and each minute into 60 equal parts, cal:ed seconds, &c. and a circle being described iron) the vertex of an angle, as a centre, an angle...
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A New System of Modern Geography, Or, A View of the Present State of the ...

Sidney Edwards Morse - 1822 - 676 páginas
...diameter is a straight line drawn through the centre from one side of the circumference to the other. The circumference of every circle is supposed to be...equal parts, called degrees ; each degree into 60 minutes ; each minute into GO seconds. An arc of a circle is part of its circumference. All angles...
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A general view of the sciences and arts, Volumen1

William Jillard Hort - 1822
...and in more modern times, Napier, the inventor of logarithms, and Briggs. In plane trigonometry, the circle is supposed to be divided into 360 equal parts, called degrees ; every degree into 60 equal parts, called minutes ; every minute into 60 equal parts, called seconds...
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A treatise of practical mensuration

Anthony Nesbit - 1824 - 434 páginas
...part of a circle, as ADC. 46. A sector is any part of a circle bounded by an arc and two radii. 47. The circumference of every circle is supposed to be...and each minute into 60 equal parts, called seconds. 48. The arc of a quadrant contains 90 degrees, which is the measure of a right angle. 49. Ap ellipse...
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The Second [-fifth and Sixth] Part of A Course of Mathematics: Adapted to ...

Jeremiah Day - 1824
...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 °,...
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Astronomy, as it is Known at the Present Day: With an Account of the Nature ...

George G. Carey - 1825 - 166 páginas
...still be in the plane of the circle. 8. Degrees, fyc. — All circles, whether great or small, are supposed to be divided into 360 equal parts, called...and each minute into 60 equal parts, called seconds, &c.f 9. An Angle is the inclination of two lines which meet in a point, and is always some part of...
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Glasgow Mechanics' Magazine, and Annals of Philosophy, Volumen3

1825
...circumference of all circles, whether small or great, is supposed to be divided into 360 equal parts, which are called degrees ; each degree into 60 equal parts called...and each minute into 60 equal parts called seconds, in the same manner as a yard is divided into 3 equal parts called feet, a foot into 12 equal parts...
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A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - 1825 - 241 páginas
...Circumference of every Circle is sipposed to be divided into 360 equal part?, 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. JVote. Since all Circles are divided into the same number ot Degrees,...
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An Introduction to the Theory and Practice of Plain and Spherical ...

Thomas Keith - 1826 - 442 páginas
...thus the arc ac is the measure of the angle авс and the arc DE is the measure of the angle ABC. (H) The circumference of every circle is supposed to be...degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds. The angles are measured by the number of degrees cut...
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