There are three particles. mass $1=1\mathrm{.}00$ x $10^-3$ kg$.$ m$2=2\mathrm{.}00$ x $10^-3$ kg$.$ m$3=8\mathrm{.}00$ x $10^-3$ kg$.$ At distances r$1=2\mathrm{.}00$ m $,$ r$2=4\mathrm{.}00$ m$,$ and at angle theta$=30$ degrees.

Solve A and B$.$

a$.)$ What is the magnitude $($N$)$ of the net force on particle $3?$

b$.)$ What is the angle $($degrees$)$ of the net force on particle $3($relative to the positive direction of the x axis?