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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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Leveling ; Circular Curves ; Stadia and Plane-table Surveying ; Topographic ...

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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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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A School Geometry, Partes1-4

Henry Sinclair Hall - 1908
...which it is perpendicular to AB. (ii) All right angles are equal. A right angle is divided into 90 equal parts called degrees (°) ; each degree into 60 equal parts called minutes (') ; each minute into 60 equal parts called seconds ("). In the above figure, if OC revolves about...
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Complete Arithmetic, Parts 2 and #3

George E. Mercer - 1909 - 294 páginas
...circumference is an arc. A to B and B to C are arcs. The circumference of every circle is divided into 300 equal parts called degrees, each degree into 60 equal...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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Radford's Cyclopedia of Construction: Carpentry, Building and ..., Volumen2

William A. Radford, Alfred Sidney Johnson - 1909
...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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Hawkins' Electrical Dictionary: A Cyclopedia of Words, Terms, Phrases and ...

Nehemiah Hawkins - 1910 - 537 páginas
...strain. Degeneration of Energy. — The deterioration or weakening of energy or force. Degrees. — The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; thus, a degree is jJijth of the circumference of any circle. A degree is divided into 60 parts called...
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The Gilbert Arithmetics, Libro 2,Partes1-2

Charles H. Gleason - 1910
...scale of J in. to 1 ft. MEASUREMENT OF ANGLES 324. The circumference of every circle, large or small, is supposed to be divided into 360 equal parts, called degrees (°); each degree into 60 minutes ('); and each minute into 60 seconds ("). Thus: the circumference of the circle ABCD = 360°....
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Hopkins and Underwood's Arithmetic: Book One-two, Libro 2

John William Hopkins, Patrick Healy Underwood - 1912
...units. The whole circumference 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. As one degree is ^^ of any circumference, a degree on one circle is not of the same size as a degree...
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Practical Mathematics: Instruction Paper, Volumen3

Glenn Moody Hobbs - 1912
...protractor, Fig. 14, showing degrees and fractions of degrees, is necessary. Each degree is divided into 60 equal parts called minutes, ', and each minute into 60 equal parts called seconds, ". Thus to represent an angle of 23 degrees, 47 minutes, and 9 seconds, write 23° 47' 9". The relations...
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The Carpenter's Cyclopedia: Comprising Modern Carpentry, Plain ..., Volúmenes1-2

Frederick Thomas Hodgson - 1913
...materially in understanding other problems. The circumference of every circle is measured by being supposed to be divided into 360 equal parts, called degrees; each degree containing 60 minutes, a smaller division, and each minute into 60 seconds, a still smaller division....
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