Minute (? or m or moa) or minute of arc or minute of angle
Minute (? or m or moa) or minute of arc or minute of angle :
A unit of angular measure equal to 60 arcseconds or to 1/60 degree. This unit is often called the arcminute to distinguish it from the minute of time. There are 21 600 arcminutes in a circle. The "SI" defines "min" as the symbol for the time unit (see above) and recommends ? as the symbol for the minute of arc. The symbol "moa" is often used in target shooting. The international standard ISO 31 requires that angles be stated in degrees and decimal fractions of the degree, without use of arcminutes and arcseconds
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