If are arbitrary vectors in M2x2, then the mapping (A, B) = |||A||= ||B|| = 0 H 4 A = -13 A (A, B) = a1b11 + a12b12 + a21b21 + a22b22 defines the standard inner product in Mx2. Use this inner product to determine (A, B). ||A||, ||B||, and the angle (in radians) between A and B for [4] 53]. 5 -1 a11 12 Ex 921 a22 and B = b b12 621 622 and B = 5 4