Answer:
A
Step-by-step explanation:
this is because an input can only have one output, but an output can have many input
 
        
             
        
        
        
Answer:
100/25, 60/15, and 4/1
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Step 1:  
✔ Cofunction identity
Step 5:  
✔ Sine difference identity
Step 6:  
✔ Cofunction Identity
Step 7:  
✔ Cosine function is even, sine function is odd.
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Adjacent. x is 100. 
Step-by-step explanation: