4 245 m 42 If is found that A B A This necessarily ir 1 B 0

Last updated: 6/21/2023

4 245 m 42 If is found that A B A This necessarily ir 1 B 0 A B 2AB 2 A and B are antiparallel 2 A 2A 3 A and B are perpendicular 4 A B 0