Doubt from complex numbers

I am getting this which don't matches with any options

Is the answer option 3?

Yes, send the solution please


Shouldn't you last step be

Yes but the plus minus can be adjusted.....

I am getting these
One of them matches

1 Like

Actually in my answer I have written the plus minus in the wrong position. Wait I'll upload right procedure...

there you go... And if you ask how I got plus minus here, then I considered one rotation in clockwise direction and other in anticlockwise direction.... Hope you understand now....:slightly_smiling_face: actually I had done a similar question so I skipped to the final step.