If The Vectors  are Non-coplanar And l, m, n are Distinct Scalars Such That         

Volume of the parallelepiped with its edges represented by the vectors   

 If the vector  lies in the plane of , then x equals 

If  are non-coplanar vectors and p, q are real numbers, then the equality

     holds for

The value of  

The vectors

 are non-coplanar vectors and λ is a real number, then 

The number of real values of a for which the vectors ,

The number of distinct values of λ, for which the vectors  are coplanar, is 

If  are unit coplanar vectors, then   

If the vectors  are non-coplanar and l, m, n are distinct scalars such that