Microseconds to Radians conversion
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A microsecond of arc is a unit of angular measurement that is equal to 10-6 of one second of arc. It is commonly used in fields that require unit for expressing very small angles, such as astronomy.
Radian is the standard unit of angular measure that defines the ratio between the length of arc and its radius. Radian is a former SI supplementary unit, but since 1995 when this category was abolished it is considered a SI derived unit.