Orthogonality condition for JEE

Formula

\(\vec{a}\cdot\vec{b}=0 \iff \vec{a}\perp\vec{b}\)

Variables: \(\vec{a},\vec{b}\) are vectors.

Conditions: For nonzero vectors in the reverse implication; zero vector is orthogonal to every vector in dot-product sense.

Testing perpendicularity.