Determining the electric field at point $A$ :

Intermediate work:

vec$(E{)}_{\text{d}\text{u}\text{e}}$ to q$1=$

$\frac{N}{C},=$ degrees

vec$(E{)}_{\text{d}\text{u}\text{e}}$ to q$2=$

$\frac{N}{C},=$

degrees

Net electric field at point $A$

vec$(E{)}_{\text{n}\text{e}\text{t}}$

$\frac{N}{C},=$ degrees

Determining the potential at point $A$ :

Intermediate work:

$V_{\text{d}\text{u}\text{e}toq1atA}=439024\mathrm{.}39,$ volts

$V_{\text{d}\text{u}\text{e}to}$ q$2$ at $A=$

$x$ volts

Net potential at point $A$

$V_A=,$ volts