For this case what we must do is use the law of cosines.
 We then have the following equation: 

 Where,
 a, b: sides of the triangle
 x: angle between sides a and b.
 Substituting values we have: 

 Clearing the value of c we have: 
 Answer:
 An expression that is equivalent to how many feet the oak trees are from each other is:
 
 
        
             
        
        
        
9514 1404 393
Answer:
   1 mile
Step-by-step explanation:
   5 × (1/5 mi) = 5/5 mi = 1 mi
The students ran 1 mile in all.
 
        
             
        
        
        
Answer:
what grade is this?
Step-by-step explanation:
 
        
             
        
        
        
You can't tell the dimensions from the area. There are an infinite number of correct answers. The length of the fence is 2 times (length of the pond + width) and the length and width can be anything, just as long as their product is 2956.5 .