Answer
Orthogonal
Work Step by Step
The angle between two vectors is determined using the formula $cos^-1(\frac{a . b}{|a||b|})$. If the dot product is zero we would immediately know whether the vectors are orthogonal. Thus we must first find the dot product between the two vectors. That would be $-4\times3+2\times6$ or 0. The vectors are orthogonal.
