Question

If the dot product of two nonzero vectors v1 and v2 is zero, what does this tell us?

A. v1 = v2

B. v1 is parallel to v2.

C. v1 is perpendicular to v2.

D. v1 is a component of v2.

***my answer; C

not sure if i'm remembering this rule correctly though.. is that right @terenzreignz? :)

Answer 1

dot product or cross?

Answer 2

It would turn out you did. It's correct~ two nonzero vectors are perpendicular (orthogonal) if their dot product is zero.

Answer 3

dot product :)

Answer 4

ahh! yayy :) hehe thanks!! :D

Answer 5

A.B=0
ABcos theta=0
cos theta HAS to be 90 so that LHS=RHS

Answer 6

ahh! yayy :) hehe thanks!! :D