A unit of angular measure equal to 60 arc seconds, or 1/60 of a degree. The arc minute is denoted (not to be confused with the symbol for feet).
Arc Minute
See also
Arc Second, DegreeExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Arc Minute." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ArcMinute.html