Question

if a,b relation R show that |a-b|=|b-a|

Answer 1

C^2 = A^2 + B^2 since this would prove A and B are perpendicular Since C = |a+b| = |a-b| I substituted in...

|A+B||A-B| = |A|^2 + |B|^2

|A^2-B^2| = |A|^2 + |B|^2