We compute this product in this way. If the dot product of two vectors is zero, the vectors or perpendicular. We also use the word orthogonal to describe two vectors that meet in a right angle. There is an angle between any two vectors which is computed easily enough using the angle command. The evalf command forces Maple to give us a decimal answer representing the angle in radians.
Every vector has a magnitude and a direction.
The direction is the angle the vector makes with the x axis. We can compute the angle a single vector makes with the x axis by finding the angle between the vector and a vector lying along the x axis. The cross product, u x v, is defined for two three dimensional vectors using the crossprod command. The result is a new 3 - dimensional vector.