Three vertices of a rectangular box, not drawn to scale, are shown. ( x , 0 , 0 ) ( 0 , y , 0 ) ( 0 , 0 , z ) = = = ( 3 , 0 , 0 ) ( 0 , 3 , 0 ) ( 0 , 0 , 5 ) Vector A ⃗ has one endpoint at the vertex which happens to be the origin, and the other endpoint is at a different vertex in the x − z plane. Vector B ⃗ also has one endpoint at the vertex at the origin, and the other endpoint is at a different vertex in the y − z plane. The angle \ theta is the angle between vectors A ⃗ and B ⃗ What is the value of A ⃗ ⋅ B ⃗ ?