text: # How do you convert -pi radian to degree?
  
  Jun 14, 2016
  
  -180˚
  
  #### Explanation:
  
  There is a simple rule that can be used when converting from a measure in radians to an equivalent measure in degrees.
  
  The rule is:
  
  $\text{radians"xx(180˚)/pi="degrees}$
  
  So to convert the given radian measure:
  
  "degree measure"=-pixx(180˚)/pi
  
  The $\pi$ in the numerator will cancel with the $\pi$ in the denominator. The minus sign will stick around leaving:
  
  -180˚
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