Question

For what value of m two vectors 3i^-6k^ and mj^ are mutally perpendicular? A.5 B.4 C.3 D.All of them

Answer 1

Answer:

ALL OF THEM  OPTION D

Explanation:

1. 3i+0j-6k
2. mj

   

    as they are perpendicular  dot product or scalar product will be 0

     

0=3*0+0*m+6*0

0=0

THEREFORE ANY VALUE WILL WORK