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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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Caldwell's Practical Arithmetic ...

M. P. Caldwell - 1883 - 191 páginas
...is used in estimating latitude and longimde, and also in measuring the motions of heavenly bodies. The circumference of every circle is supposed to be divided into 360 degrees. TIME. 60 Seconds (sec.) make 1 Minute, marked m. 60 Minutes " 1 Hour, " hr. 24 Hours " 1 Day,...
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The American Practical Navigator: Being an Epitome of Navigation and ...

Nathaniel Bowditch - 1888 - 647 páginas
...small, are supposed to have their circumference 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 so on into thirds, fourths, Jtc. ; and an arc is said to be of as many degrees as it contains...
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Robinson's Progressive Practical Arithmetic: Containing the Theory of ...

Horatio Nelson Robinson - 1888
...sjiits containing 9 yd. 2 qr. each ; how many suits did he make ? Ans. 1 7. LONGITUDE AND TIME. 224. Every circle is supposed to be divided into 360 equal parts, called degrees. Since the sun appears to pass from east to west round the earth, or through 360°, once in every 24...
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Elementary Synthetic Geometry of the Point, Line and Circle in the Plane

Nathan Fellowes Dupuis - 1889 - 294 páginas
...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 Theorem. —...
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The Field Engineer: A Handy Book of Practice in the Survey, Location, and ...

William Findlay Shunk - 1890 - 339 páginas
...includes one-quarter of the circle, and is the measure of a right angle. Each degree is further divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. Degrees, minutes, and seconds are denoted by the symbols °, ', ": thus the expression 7° 22' 33"...
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Mechanics' and Engineers' Pocketbook of Tables: Rules, and Formulas ...

Charles Haynes Haswell - 1890 - 956 páginas
...right line that touches a circle without cutting it. Cotangent is tangent of complement of arc. • ii Circumference of every circle is supposed to be divided into 360 equal parts, termed Degrees ; each degree into 60 Minutes, and each minute into 60 Seconds, and so on. Complement...
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Practical Plane and Solid Geometry, Including Graphic Arithmetic

Isaac Hammond Morris - 1890 - 260 páginas
...PROBLEM 24. — To construct an angle containing a given number of degrees. The circumference of a circle is supposed to be divided into 360 equal parts, called degrees. The radius of a circle may be set off exactly six times round the circumference ; hence, if an arc...
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The Carpet-dealer's Guide: A Manual of Practical Information on the Art of ...

John H. Macke - 1891 - 228 páginas
...the circumference of a circle 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. To find the diameter when the circumference is given. RULE. Divide the circumference by 3.1416. Example....
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Mensuration and Practical Geometry: Containing Tables of Weights and ...

Charles Haynes Haswell - 1892 - 323 páginas
...that touches a circle without cutting it. A Cotangent is the tangent of the complement of the arc. The Circumference of every circle is supposed to be...360 equal parts, called Degrees ; each degree into 00 Minutes, and each minute into 60 Seconds, and so on. The Complement of an angle is what remains...
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Robinson's New Practical Arithmetic for Common Schools and Academies

Horatio Nelson Robinson - 1892 - 416 páginas
...the size of each farm ? Ans. 106 A. 106 P. 20 sq. yd. 1 sq. ft. 72 sq. in. LONGITUDE AND TIME. 224:. Every circle is supposed to be, divided into 360 equal parts, called degrees. Since the sun appears to pass from east to west round the earth, or through 360°, once in every 24...
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