# Vector algebra

**Importance**

Vector algebra is one of the topic with major weightage and constitute a big section of mathematics. We will see how this chapter is important for exam preparation.

**Yearly trend**

It can be seen from the graph that many questions are asked from this chapter specially in JEE-Advanced. So, it is an important topic and all concepts must be understood. We will see the topics to be studied in the section below.

**Important concepts**

The important concepts in this topic are : 1. Coplanarity of threee vectors, !!veca,vecb,vecc!!

Scalar product of three vectors, !!veca.(vecbxxvecc)!!

Vector triple product, !!vecaxx(vecbxxvecc)=(vecc.veca)vecb-(veca.vecb)vecc!!

Scalar and Vector product of vectors.

Volume of a parallelopiped having the adjacent sides as !!veca,vecb!! and !!vecc!!.

Collinear vectors, dependent and independent vectors.