Answer:
√85
Step-by-step explanation:
A (-3 , 4)    B (4 , -2)
AB² = (4 - -3)² + (-2 -4)² = 49 + 36 = 85
AB = √85
 
        
             
        
        
        
Answer:
angle is 45° which is constant
Step-by-step explanation:
We use formula for two vectors <u>a </u>and <u>b</u>    to calculate angle θ between them by formula
cos θ =  <u>a .</u> <u>b</u>  /  magnitude of <u>a </u>  ×  magnitude of <u>b</u>
<u>Please see the attached file</u>
 
        
             
        
        
        
Try using
Wolframalpha.com
It can solve any mathematical problem
        
             
        
        
        
Answer:
Convert to a decimal by dividing the numerator by the denominator.
4.43349753 just easy