Answer:
40
Step-by-step explanation:
 
        
                    
             
        
        
        
Move all terms to the left side then set equal to 0. then set each factor equal to 0.      k=-1, -5
        
                    
             
        
        
        
An equation whose variables are polar coordinates is called a polar equation. These equation are characterized by an r as a function an angle. Polar equations can be written in rectangular coordinates by certain relationships. An example of a polar equation would be r = 2sin∅.