the second option
Step-by-step explanation:
root 4 16 is 2
root 4 powers mean divide by 4
 
        
             
        
        
        
Answer:
a equals 105°
Step-by-step explanation:
angles in a straight line add up to 180°
a+75=180
a=180-75
a=105°
 
        
             
        
        
        
Answer:

Step-by-step explanation:
I have answered ur question 
 
        
             
        
        
        
Answer:
a=405
Step-by-step explanation: