 | Charles Davies - 1846 - 370 sider
...CIRCLE MEASURE OF TIME. 40. 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. For astronomical purposes, the circumference of the circle is also supposed... | |
 | James Robinson (of Boston.) - 1847 - 304 sider
...The circumference of every 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. Hence, a semicircle measures 180 degrees, and a quadrant 90 degrees. 46.... | |
 | Anthony Nesbit - 1847 - 492 sider
...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. 40. The diameter of a circle is a right line drawn through the centre,... | |
 | Charles Davies - 1849 - 372 sider
...trigonometrical calculation, the circumference of the circle is divided into 360 equal parts, called •legrees; each degree into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. nated by the characters : °,',": thus the expression 16° 6' 15" represents... | |
 | Daniel Adams - 1849 - 142 sider
...are sextants. 10. The circumference of every circle 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. 11. Degrees, minutes, and seconds, are marked respectively °, ', "; they... | |
 | Rufus Putnam - 1849 - 276 sider
...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. Hence, a semicircle contains 180 degrees, and a quadrant, 90 degrees.... | |
 | Mary Somerville - 1849 - 568 sider
...from the sun. NOTE 50, p. 11. Ninety degrees. A circle is divided into 360 equal parts, or degrees; each degree into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. It is usual to write these quantities thus, 15° Ki' Id", which means... | |
 | Charles Guilford Burnham - 1850 - 350 sider
...The circumference of every 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 ; and these into thirds, etc. Hence a semicircle contains 180 degrees,... | |
 | Charles Davies - 1850 - 218 sider
...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 ° ' " ; and 9° 18'... | |
 | Daniel Adams - 1850 - 144 sider
...are sextants. 10. The circumference of every circle 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. 11. Degrees, minutes, and seconds, are marked respectively °, ', " ;... | |
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The circumference of every 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, and these into thirds, fourths, &c. 
