Convert 1/2 circle to second of angle
Selected category: angle.
Definition and details for 1/2 circle:
1/2 circle is an angle equal to pi radians, or 180 degrees.
Definition and details for second of angle:
Second or arcsecond (" or s or sec) is also a unit of angle measurement equal to 1/60 arcminute, or 1/1296000 circle. The SI defines s as symbol for the time unit and recommends " as the symbol for arcsecond.