If A and B are orthogonal n n matrices such that det A =
Chapter 6, Problem 47(choose chapter or problem)
If A and B are orthogonal n n matrices such that det A = det B = 1, then matrices A and B must commute.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer