| Joseph Hutchins Colton - Geography - 1880 - 152 pages
...unequal parts. 4. For the purpose of measurement, every circle is conceived to be divided into 3(30 **equal parts called Degrees ; each degree, into 60 equal parts called minutes; and each minute, into** GO equal parts called Seconds. Degrees are marked °, minutes ', seconds ''. 5. The great circle which... | |
| Samuel Maunder - Encyclopedias and dictionaries - 1880 - 904 pages
...a circle, Is a sector having a quarter of the circumference for its 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 80 seconds: hence я semicircle contains 180 degrees, andaquadrtnt 90... | |
| Evan Wilhelm Evans - Geometry - 1884 - 242 pages
...arc may be taken as the measure of its subtended angle. To this end the circumference is conceived **to be divided into 360 equal parts, called degrees, each degree into 60** minutes, and each minute into 60 seconds. Then, whatever number of degrees, etc., an arc contains,... | |
| Charles Davies - Geometry - 1886 - 346 pages
...Definitions. 28 The circumference of a circle is used for the measure. ment of angles. For this purpose it is **divided into 360 equal parts called degrees, each...parts called minutes, and each minute into 60 equal** pans called second s. The degrees, minutes, and seconds are marked thus ° ' " ; and 9° 18' 16", are... | |
| Charles Haynes Haswell - Measurement - 1892 - 334 pages
...without cutting it. A 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** 00 Minutes, and each minute into 60 Seconds, and so on. The Complement of an angle is what remains... | |
| William Benjamin Smith - Geometry, Modern - 1892 - 160 pages
...straight angle? In a right angle ? HISTORICAL NOTE. — For purposes of computation the round angle is **divided into 360 equal parts called degrees, each degree into 60 equal** minutes (partes minutce primae), each minute into 60 equal seconds (partes minutae secunJiz), denoted... | |
| William Benjamin Smith - Geometry, Modern - 1892 - 314 pages
...straight angle? In a right angle ? HISTORICAL NOTE. — For purposes of computation the round angle is **divided into 360 equal parts called degrees, each degree into 60 equal** minutes (partes minutes primae), each minute into 60 equal seconds (partes minutse secundci), denoted... | |
| William Benjamin Smith - Geometry, Modern - 1893 - 330 pages
...straight angle? In a right angle ? HISTORICAL NOTE. — For purposes of computation the round angle is **divided into 360 equal parts called degrees, each degree into 60 equal** minutes (partes minutte primse), each minute into 60 equal seconds (partes minutse secundtz), denoted... | |
| Edward Brooks - Arithmetic - 1895 - 248 pages
...from a point within called the centre. 3. For the purpose of measuring angles 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. 4. Any angle at the centre, as BCD, is measured by... | |
| George Washington Hull - Arithmetic - 1895 - 396 pages
...quadrant. An Arc is any part of a circumference. For convenience of measuring 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. TABLE. 60 seconds (") = 1 minute, '. 60 minutes... | |
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