 | William W. Luggen - 1996 - 436 σελίδες
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 | Holbrook Lynedon Horton - 1999 - 706 σελίδες
...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... | |
 | Various - 2007 - 372 σελίδες
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 | R.R. Hobbs - 1981
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 | United States. Army. Air Corps - 1941 - 244 σελίδες
...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... | |
 | 1944 - 598 σελίδες
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 | 280 σελίδες
...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... | |
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In order to obtain accurate measurements each degree is divided into 60 equal parts called minutes and each minute is divided into 60 equal parts called seconds. 
