So k=1000 like 4k=4 000 so 6/7 of a thousnad =0.857142857 so times 6=0.857142857
        
                    
             
        
        
        
Check the picture below.  Recall your SOH CAH TOA.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Angles EBC and EDC are the same. and straight lines equal 180
so now to solve for x

 
        
             
        
        
        
Answer:
{60°,300°}
b.
Step-by-step explanation:
edge 2020