दो गैर-शून्य सदिशों (non-zero vectors) A और B के लिए, स्थिति |A + B| = |A - B| हमेशा सत्य होती है जब:

If iî, jî and kî are the three unit vectors along the x-direction, y-direction and z-direction, respectively, what will be the magnitude of the vector (iî - jî)?

Two vectors P⃗ and Q⃗ have equal magnitudes. If the magnitude of (P⃗ + Q⃗) is n times the magnitude of (P⃗ - Q⃗), then the angle θ between P⃗ and Q⃗ is given by: