Answer:
9² = 40² + 41² - 2(40)(41) cos(C)
81 = 1600 + 1681 - 3280 cos(C)
81 = 3281 - 3280 cos(C)
-3200 = -3280 cos(C)
cos(C) = 3200 / 3280
cos(C) = 40 / 41
Step-by-step explanation:
 
        
             
        
        
        

≈1.41
12 x 1.41=<span>16.92</span>
 
        
                    
             
        
        
        
Just multiple them together and u get 693
        
             
        
        
        
You would divide 24 by 5 so the length would end up being: 4.8 in 
                  Hope it helps!
        
             
        
        
        
Answer:
y = 0
Step-by-step explanation: