B is 90-42=48° since complementary angles add to 90°
        
             
        
        
        
In this pattern , the numbers are doubling..
2,4,6,8,10...
        
             
        
        
        
Answer:
The answer is "2793 miles"
Step-by-step explanation:
In this firstly we convert degrees to radians, which can be defined as follows:

        
Now calculating the distance:


 
        
             
        
        
        
Actually I can help you in three of them as the number "3" is not confined between the arrays ND and NE
So:
It would be 
angle END 
or
angle DNE
or 
angle N
        
             
        
        
        
Hey There! 
If i got this down right, 
An = A1 + (n - 1)d
Sn = A1 + A2 + A3 + ... + An
A1 is given by
Sn = n (A1 + An) / 2
For Example
An = A1 + (n - 1)d
= 6 + 3 (n - 1)
= 3 n + 3
n = 50
Hope This Helps!!!