Books Books 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. A Treatise of Plane and Spherical Trigonometry: In Theory and Practice ... - Page ix
by Francis Nichols - 1811 - 128 pages ## A Familiar Introduction to the Arts and Sciences, etc

Jeremiah JOYCE - Science - 1852 - 430 pages
...contained by the two legs, having the angular point for its centre. 4. 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. Degrees, minutes, and seconds are marked at the... ## High School Arithemtic: Containing the Elementary and the Higher Principles ...

James B. Dodd - Arithmetic - 1852 - 410 pages
...Circumference, and the Measure of Angles. § 304. 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... ## A Complete Epitome of Practical Navigation ...

John William Norie - Nautical astronomy - 1852 - 848 pages
...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, 40°... ## Elements of Geometry and Trigonometry: With Applications in Mensuration

Charles Davies - Geometry - 1886 - 340 pages
...Definitions. 28. 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 minutes, and each minute into 60 equal parts called seconds. The degrees, minutes, and seconds are marked thus... ## High School Arithmetic

James B. Dodd - 1853 - 398 pages
...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... ## The American House Carpenters' and Joiners' Assistant: Being a New and Easy ...

Lucius D. Gould - Carpentry - 1853 - 234 pages
...AC and EC, is called the angle ACE, or EGA. Fig. 9. The circumference of every circle is supposed to be divided into 360 equal parts, • called degrees, each degree into 60 minutes, and each minute into 60 seconds, etc. A semicircle, therefore, contains 180 degrees, and a... ## Engineers' and Mechanics' Pocket-book ...

Charles Haynes Haswell - Engineering - 1853 - 318 pages
...Cotangent is the tangent of the' complement of the arc. The Circumference of every circle is supposed to be divided into 360 equal parts called Degrees ; each degree into 60 Minutes, and each minute into 60 Seconds, and BO on. The Complement of an angle is what remains after... ## Mathematical Dictionary and Cyclopedia of Mathematical Science: Comprising ...

Charles Davies, William Guy Peck - Mathematics - 1855 - 628 pages
...computation. For 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... ## Elements of Geometry and Trigonometry: With Applications in Mensuration

Charles Davies - Geometry - 1855 - 340 pages
...GEOMETRYDefinitions 28 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... 