Question

a b c are non zero vectors and a is perpendicular to both b and c if |a|=2,|b|=3,|c|=4 and (b,c)=2π/3 then find | [a b c]|

Answer 1

Answer:

Given the non-zero vectors a, b and c and that a *(b × c) = 0, then...

A. a, b and c are parallel

B. a is perpendicular to b and c

C. a, b and c are coplanar

D. a, b and c are unit vectors

E. all three vectors must be the same vector