Answer:
solve for x first and then y 
Step-by-step explanation:
once you know what x is than y , ur answer will equall out
 
        
             
        
        
        
O = x, h=15 angle = 23
sin 23 = o/h
sin 23 x 15 = x
x=5.9 --> C
        
             
        
        
        
Answer:
4mm
Step-by-step explanation:
you have to add both sides after substituting each of the 4 sides by 1mm
which gives you the total of 4
 
        
             
        
        
        
Answer:
agidls
Step-by-step explanation: