Complex problem solving q (1 Viewer)

[gamja]

I swear ive done something with mod=1 before, but cant remember... Any clues on how to solve? thx!

 

[nathanzhou1234]

View attachment 37345

I swear ive done something with mod=1 before, but cant remember... Any clues on how to solve? thx!

Try geometrically cos z1-z2 represents a the vector between the two. I think its gonna be a parallelogram or smth and thus (z1-z2) and (z1+z2) will be diagonals. Cos they’re equal in magnitude it has to be a rectangle i think.
go shore