Check the picture.
Consider the triangle DAB, with |DA|=9 ft, |AB|=23 ft and m(DAB)=80°.
To find the length of the diagonal, |DB|, we use the cosine law:


Thus, |DB|= 

 (ft)
Answer: 24.6 ft
 
        
        
        
Answer: a=2 b= 11/6 or 1  5/6
Step-by-step explanation:
 
        
             
        
        
        
Answer:
It will take 
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