Answer:
b and c
Step-by-step explanation:
 
        
             
        
        
        
Since the center is considered the corner that they both share, here are the answers figure a goes with the first, figure b goes with the last, figure c goes with the second, and figure d goes with the third. Hope this helps.
        
             
        
        
        
Answer:
- cos (x) cos (2x) - 2sin(x) sin(2x)
Solution: 
(See the solution in the photo)
 
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation: