Question

(vector A + vector B) ? (vector A - vector B)

Answer 1

Geometrically, the cross product of two vectors is the area of the parallelogram between them. ... Since this product has magnitude and direction, it is also known as the vectorproduct. A × B = AB sin θ n̂ The vectorn̂ ("n hat") is a unit vectorperpendicular to the plane formed by the two vectors.

Answer 2

A + B = (a^2 + b^2 + 2a b cos theta)^2

A - B =(a^2 + b^2 + 2 a b sin theta)^2