Answer: 
Step-by-step explanation:
 1. You have the following information:
 - The lenght of  is 2 centimeters.
 is 2 centimeters.
 - The angle m∠S=80°.
 - Cos80°=0.17
 2. Therefore, you can calculate the lenght of the segment  as following:
 as following:
 
 
 3. Substitute values and solve for  :
:
 
 4. To the nearest tenth:
 
 
        
             
        
        
        
Answer:
9 cm
Step-by-step explanation:
It say ΔLMN and Δ PQR is equal 
Therefore, LN is 9 cm Then PQ is 9 cm Too.
 
        
             
        
        
        
If m=4 and n=4 then m=n 
4=4 
1=1
        
             
        
        
        
Answer:
2, 18, 56.54
Step-by-step explanation:
hope this helped!