| Eugene Herz, Mary G. Brants - Arithmetic - 1920 - 340 pages
...as one 25,000 miles in length. For making the more accurate measurements in surveying and astronomy each degree is divided into 60 equal parts called...minute is divided into 60 equal parts called seconds. Exercise 4 — Oral. 1. Draw a circle. How many degrees are there in your circle? 2. If each one in... | |
| Papermaking - 1921 - 488 pages
...angles is necessary for their solution. The circle is divided into 360 equal parts called degrees; each degree is divided into 60 equal .parts called...minute is divided into 60 equal parts called seconds. When the circle is divided into four equal parts, each part is called a quadrant, and the 4 equal angles... | |
| Harmon Bay Niver - Geography - 1922 - 376 pages
...Divided. Every circle, no matter what size it may be, 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. The Equator and the meridian circles are called great circles,... | |
| Edward Nathan Zern - Coal mines and mining - 1928 - 1290 pages
...the angle. For measuring angles, the circumference is divided into 360 equal parts, called degrees; each degree is divided into 60 equal parts called minutes; and each minute is divided into ßO equal parts called seconds. Divisions smaller than a second are expressed in decimal parts of that... | |
| Nathaniel Bowditch - Nautical astronomy - 1931 - 866 pages
...All circles are supposed to have their circumferences divided into 360 equal parts, cal.ed degrees; each degree is divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds; an arc is measured by the number of degrees, minutes, and seconds... | |
| Holbrook Lynedon Horton - Mathematics - 1999 - 706 pages
...into 360 equal parts called degrees; so that the angle which each part subtends is equal to a degree. Each degree is divided into 60 equal parts called...minute is divided into 60 equal parts called seconds. ln the circular system of measure the unit is the radian. If, instead of dividing the circumference... | |
| United States. Army. Air Corps - Navigation (Aeronautics) - 1941 - 244 pages
...meridian. This period is called the day. The day is divided into 24 equal parts called hours and each hour is divided into 60 equal parts called minutes, and...minute is divided into 60 equal parts called seconds. 19. Sidereal time. — a. Generatea solely by earth's rotation. — The simplest conception of time... | |
| 280 pages
...unit on account of its size. A right angle is therefore 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. This system of measurement is called the Sexagesimal system. The... | |
| |