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An arcminute (arcmin) or minute of arc is a unit of angular measurement equal to 1/60 of one degree. Since one degree is 1/360 of a turn (or complete rotation), one minute of arc is 1/21600 of a turn (or, in radians, π/10800)
In relation to the base unit of [angle] => (radians), 1 Hour Angles (HA) is equal to 0.26179938779 radians, while 1 Arcminutes (arcmin) = 0.000290888 radians.| 21 Hour Angles | to common angle units |
|---|---|
| 21 HA | = 5.49778714359 radians (rad) |
| 21 HA | = 5497.78714359 milliradians (mrad/mil) |
| 21 HA | = 5599.9983127951 angular mils (µ mil) |
| 21 HA | = 314.99998770478 degrees (°deg) |
| 21 HA | = 350.00000595812 gradians (grad) |
| 21 HA | = 18900.013557074 arcminutes (arcmin) |
| 21 HA | = 1133999.9557748 arcseconds (arcsec) |
| 21 HA | = 5.2499977497952 sextants (60°) |
| 21 HA | = 10.499975446123 signs (30°) |
| 21 HA | = 0.87499934644504 turns (t) |