Question

3.
If Ā= 3î +2j^ and B = 2î +3j^– k, then find a unit vector along (A-B).

Answer 1

Answer:

Explanation:

A-B = 3i+2j-(2i+3j-k) = i-j+k. Therefore the unit vector along A-B is (i-j+k)/√{1^2+(-1)^2+1^2}

= (i-j+k)/√3