
Complex Functions Help
Hello!
I need help with the following question:
Find the point of intersection and the angle of intersection of the straight lines
z  1  j = z  3 + j
z  1 + j = z  3  j
I have already found the point of intersection to be z = 2, i.e x=2,y=0. But I don't know how to find the angle of intersection.
All help is much appreciated. Thanks.

If you let $\displaystyle z=xi+yj$, plug into the given equations, you will find out that the straight lines are $\displaystyle y=x2$ and $\displaystyle y=x+2$. They are perpendicular to each other, hence the angle of intersection is 90.

Thanks for the help roy_zhang. Highly appreciated. (Wink)