Doubt by abdul kader Ahammed

Answer is option 2 and option 4 Because vector 7k cap is perpendicular to 4icap -3jcap but not coplaner and 3icap-4jcap is perpendicular to 4icap-3jcap and coplaner also

Answers

Answer by MANOJ CHOUHAN_NEETPrep

How 3i-4j is perpendicular to 4i-3j? Please cross check your answer. 7k is perpendicular to 4i-3j.