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radianmore about radian

radian


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Radian  \Ra"di*an\,  n.  [From  {Radius}.]  (Math.) 
  An  arc  of  a  circle  which  is  equal  to  the  radius,  or  the  angle 
  measured  by  such  an  arc. 
 
  From  WordNet  r  1.6  [wn]: 
 
  radian 
  n  :  the  unit  of  plane  angle  adopted  under  the  System 
  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)  [syn:  {rad}] 




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