Question

please explian it fast

Answer 1

let z=1-i root3 /1-i root3
     z =1+i(0)=x+iy
       x=1,y=0
argument of z=tan inverse of(y/x)
               =tan inverse of (0)
                  =0

Answer 2

bro directly the question say find the argument of 1 means 1+0i so y=0 & x= 1. and tan^-1 (0/1) = 0 so e is correct option