Radians to Turns conversion
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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.
A turn, from the Greek word τόρνος (tornos – a lathe), is a unit of angle measurement that is equal to 360°, 2π radians or τ (tau) radians. Turn is also referred to as a revolution or complete rotation or full circle or cycle or rev or rot.