Answer:
 or
  or 
Step-by-step explanation:
we know that
Applying the law of cosines

In this problem we have



substitute the values



 
        
                    
             
        
        
        
Yes. This is true because 4 subtracted from 8 is 8-4=4. The value you get from subtracting 4 from 8 equals the same value you would get if you were to take the value of 2 and square it. Both equal 4.
        
             
        
        
        
your answer for this question is y=c hope this helps
 
        
             
        
        
        
The required type of p-value would she want to obtain is small p-value. 
<h3>What is hypothesis test?</h3>
Hypothesis testing is a type of measurable surmising that utilizes information from an example to make inferences about a populace boundary or a populace probability distribution. Initial, a speculative supposition that is made about the boundary or dispersion.
<h3>According to question:</h3>
P-value  shows that the outcomes are genuinely huge.
P-value  in Measurements assists with performing speculation test and it assists with deciding the meaning of the outcomes.
A little P-value  commonly (P<0.05) demonstrates solid proof against the invalid speculation in this way, we reject the invalid speculation, on opposite when P-esteem is enormous we can't dismiss the invalid speculation.
Thus, required answer is small p-value.
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