NCERT Notes for CBSE Class 12th Maths. What is Vector. Types of Vectors: Unit Vector. Co-initial vectors, Collin ear vector, negative of a vector, free vectors. Triangle Law. Position Vector of a point. Magnitude or Length of a vector. General Formulae of Vectors. Section formula of Vectors. Direction ratios. Direction cosines. Product of two vectors. Dot Product or Scalar Products. Cross Product or Vector Product with examples.