2 Example 2 21 Prove that ax b a b a b Sol Let a a b b and

Last updated: 6/13/2023

2 Example 2 21 Prove that ax b a b a b Sol Let a a b b and be the angle between them ax b ab sin 0 a b sin 0 a b 1 cos 0 a b ab cos 0 2 212 2 b DUIS