| Nathaniel Bowditch - Nautical astronomy - 1826 - 732 pages
...or 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,* be. and an arch is said to be. of as many degrees as it contains parts... | |
| Nathaniel Bowditch - Nautical astronomy - 1826 - 764 pages
...small, are supposed to have th cumference divided into 360 equal parts, called degrees, and each deçr **60 equal parts, called minutes ; and each minute into 60 equal parts.** seconds, and so on into thirds, fourths,* be. and an arch is said to bi many degrees as it contains... | |
| Robert Simson - Trigonometry - 1827 - 546 pages
...II. The circumference of a circle is supposed to be 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,** &c. And as many degrees, minutes, seconds, &c. as are contained in any arch, of so many degrees, minutes,... | |
| James Thomson - 1827 - 1012 pages
...circle be divided into 360 equal parts, each of them is called a degree. Each degree is subdivided **into 60 equal parts, called minutes; and each minute into 60 equal parts, called** * Geography is a description of the earth ; and is distinguished by different names, according to tha... | |
| Adrien Marie Legendre - Geometry - 1828 - 346 pages
...calculations, the circumference of the 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.** The semicircumference, or the measure of two right angles, contains 180 degrees; the quarter of the... | |
| Montgomery Robert Bartlett - Education - 1828 - 426 pages
...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;** and these into thirds, &c. Now, as all circles are not of the same magnitude, and as they are all divided... | |
| John Playfair - Geometry - 1829 - 210 pages
...Mathematicians suppose the circumference of every circle to be divided into 360 equal parts, called degrees, and **each degree into 60 equal parts, called minutes, and each minute into** £0 equal parts, called seconds, &c. Hence a right angle, being measured by a quadrant contains 90... | |
| Charles Davies - Surveying - 1830 - 316 pages
...calculations, the circumference of the 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.** 26. As the circumference of a circle may be regarded as a proper measure of angles, having their vertices... | |
| John Lee Comstock - Physics - 1831 - 312 pages
...near the star a. Each of the 12 signs of the zodiac is divided into 30 smaller partSj called degrees; **each degree into 60 equal parts, called minutes, and each minute into 60** parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign having... | |
| Joseph Allen - America - 1832 - 128 pages
...360 equal parts, called degrees, and each degree contains about 09 A miles. Each degree is divided **into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds.** Questions for Review. How many degrees are there in the circumference of the earth ? How many miles... | |
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