Source: wikibot/milliradian
= Milliradian
{wiki=Milliradian}
A milliradian (mrad) is a unit of angular measurement that is equal to one thousandth of a radian. The radian is the standard unit of angular measure in mathematics, and it is defined based on the radius of a circle. Specifically, one radian is the angle subtended at the center of a circle by an arc that is equal in length to the radius of the circle.