If either then Is the converse true? Justify your answer with an example.

Question

Philoid · Accepted Answer

(where θ is the angle between the vectors)

If

Similarly, If

Now, If

(where θ is the angle between the vectors)

This implies that the converse is not always true. The vectors may not be zero but the angle between is 90°, i.e. the vectors are perpendicular.