Answer:
D) 57.5°
Step-by-step explanation:
As the question is not complete. So, let's suppose it is a right angle triangle then, we can apply Pythagoras theorem to calculate the hypotenuse or the third side. 
Pythagoras Theorem =  =
 =  
 
a = 7 and b = 11
 = 49
 = 49
 = 121
 = 121
Plugging in the values, we will get:
 = 49 + 121
 = 49 + 121 
 = 170
 = 170
c = 
To calculate the unknown angle B, we can use law of sine. 
Law of sine =  =
 =  =
 =  
 
So, 
 =
 = 
 =
 =  
Sin90 = 1
sinB = 
B =  (
 ( )
)
B = 57.5°
 
        
             
        
        
        
Answer:
c=50
Step-by-step explanation:
 
        
             
        
        
        
4/3
40/30
60/45
Simply multiply or divide both the 20 and the 15 to get an equivalent ratio.
        
                    
             
        
        
        
Answer:
will be 50% eazy ez hhhhh
Step-by-step explanation:
 
        
             
        
        
        
Answer:
you have to write the way you did the problem
Step-by-step explanation: