Question

37) Which of following pairs of vectors are not mutually perpendicular (
a) 4i+2; -3k &i+2j+2k b) 3i +2j+k & i- j+k
c) i +4j+3k & 4i+2j -- 4k d) 3i – 2j-k&i+j+k​

Answer 1

Answer:

(a) must be I guess okay thanks