... >> Mathematics >> Algebra >> Radian
Highest Rated Sign
Video id:  #472 (enlarge) 
Post date:  2/12/2011 
Posted by:  jblucht 
Rating:  
0 ratings 
Radian

Definition: 180 degrees = pi radians. By using radian measure, arc length calculations become easy.
Source: "Precalculus" by David H. Collingwood and K. David Prince at the University of Washington

Example: 3pi radians = 540 degrees 1/2pi radians = 90 degrees
 There are no comments for this topic.