Question

what is the unit vector of î-j^??

Answer 1

When a unit vector in space is expressed, with Cartesian notation, as a linear combination of i, j, k, its threescalar components can be referred to as direction cosines. The value of each component is equal to the cosine of the angle formed by the unit vector with the respective basis vector.

Answer 2

Answer is - 1 when you multiple i and j