Question

If vector(a x (b x c)) = vector((a x b) x c) for non-coplanar vectors(a,b,c) then ...

(a) vector a parallel to vector b

(b) vector b parallel to vector c

(c) vector c parallel to vector a

(d) vector(a + b + c) = 0

Answer 1

(c) vector c parallel to vector a

Given