Calculating Potential Difference Between A(0,1) & B(1,0)

[brad sue]

Hi, I would like to have some suggestion about how to do this problem:

Given the electric field vector E=x(1-sin (phi))+ y.cos(phi)
x and y are unit vectors.
Calculate the potential difference between the points A(0,1) and B(1,0).
along :

1- Circular arc from(0,1) to (1,0)

2-straight line connecting (0,1) and (1,0)

thank you.

 

[robb_]

V is the path integral of E dot dL, with a minus sign(convention).

 

[brad sue]

I have succeeded to do the first question but how to do the second one. I found the line equation( I think it can help) but then I don't know how to continue.

B.