complex number

q40 ans bc

@NishantThakre u can do it by two methods:
 conjugate of a complex number is actually the image of the complex number z in the real axis.
 convert it into cartesian form , find reflection and convert back to complex form. equate coffec.

@NishantThakre
Another reason of slopes negative of each other as one making tan theta with real axis and other tan(pietheta).