I believe your answer is TRUE!
Hope this helps!:)
        
             
        
        
        
Answer:
c.Beta (1 e-) is the answer. 
 
        
             
        
        
        
The diagram shows components that have been added together to form Rx and Ry. Rx and Ry are the components of the resultant vector.
Which formula can be used to find the angle of the resultant vector?
the answer is C 
C.  tan0= Ry/Rx
        
             
        
        
        
Answer:
delta r(x) = (delta (r)) * cos(alpha), delta r(y) = (delta(r)) * sin(alpha)
Explanation:
Well it's a simple rule I guess...