Question 621290
{{{ 4 - 4*sqrt(3)*i }}}
{{{ 4*( 1 - sqrt(3)*i ) }}}
The angle is in the 4th quadrant and it is the
angle whose tan is {{{ sqrt(3) }}}, which is 
minus 60 degrees. The length is {{{ sqrt( 1^2 + (sqrt(3))^2 ) }}}
which is {{{2}}}
{{{ 4*2 = 8 }}}
In polar form:
{{{ 4 - 4*sqrt(3)*i }}}  = 8 @ -60 degrees