Plural form of radian. The angle subtended at the centre of a circle by an arc of the circle of the same length as the circle's radius.(noun)
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Use "radians" in a sentence
"But the factor is only – 1 when we express angles in radians, right?"
"They took a good beating for using degrees rather than radians (Do economists even know of radians?) and therefore the land use to measured temperature concept was considered discredited."
"The relationship thus has nothing to do with how we measure angles (except inasmuch as it serves as yet another example of the superiority of radians)."