Radians 
  
   
  
 
   
  
  
  Examples
  
  
   
  
 
   
  
     Examples
  
 
  
 
   
  
  
    In degrees
 

     In radians 

    
  
   
 
     
  
  Quadrant 2
  
    
    180° - 30° = 150° 
   
    180° - 45° = 135°  
    180° - 60° = 120°  
 
    π - π/6 = 5π /6 rads
   
   π - π/4 = 3π /4 rads
  π - π/3 = 2π  
 /3 rads
 
   
  Quadrant 3
  
  
    180°  + 30° = 210°
   
    180° + 45° = 225° 
    180° + 60° = 240°    
 
 
     
  
  π  + π/6 = 7π/6 rads
   
   π + π/4 = 5π/4 rads
   π + π/3= 4π/3 rads    
 
   
  Quadrant 4
    
  
  
    360°  - 30° = 330°
   
    360° - 45° = 315° 
    360
    ° - 60° = 300°    
 
 
     
      
  2π - π/6 = 11π/6 rads
   
   2π - π/4 = 7π/4 rads
   2π - π/3= 5π/3 rads    
 
  Examples
  
    
    
    
    
  
  
 
  
 
 
  
 
  
 
 
   
   
    
 
    
    
    
        
© Alexander Forrest