| NOM | quantity | radian, rad | the unit of plane angle adopted under the Systeme International d'Unites |
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| Sentit | The unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees). | |
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| Sinònim | rad | |
| Anglès | radian, rad | |
| Espanyol | radián | |
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