Two vector quantities are equal

If they have the same magnitude(length)and direction.


negative of a vector as a vector having the same magnitude as the origin vector but opposite direction.

Magnitude of a vector quantity is a scalar quantity and is always positive.
(Magnitude of A )=A=|A|.

Let.C
as vector sum of A and B then

C=A+B and A+B=B+A

This shows that vector addition obeys the commutative law


Next: Components of Vectors