On an Argand diagram, sketch the locus representing complex numbers satisfying $|z + i| = 1$ and the locus representing complex numbers w satisfying $\arg(w − 2) = \dfrac{3\pi}{4}$.
Find the least value
of $|z − w|$ for points on these loci.
I correctly sketch the Argand but how to find $|z-w|$, how to solve this, do i need to find the intersection between the 2 sketch...