Vectors have both magnitude and direction.
To Denote A Vector as a:
Single Letter in bold. i.e a.
Position vectors are also called as end points.
To Find the Modulus / Magnitude of a position vector:
Addition And Subtraction of Vectors:
- The negative sign reverses the directionof a vector.
- The result of a-b is a + – b e. subtracting b is equal to adding the negative of b.
If two line segmants AB and CD are parallel, in same direction and equal in length, then AB and CD are equal vectors.
Vectors are parallel, if they have the same direction.
Both components of one vector must be in the same ratio to the corresponding components of the parallel vector.
Vector b kb (k>0) kb (k<0)
If a = kb, the vectors a and b are parallel and are in same direction.