public function testCrossProductInnerProductWithEitherVectorIsZero(array $A, array $B)
{
$A = new Vector($A);
$B = new Vector($B);
$AxB = $A->crossProduct($B);
$this->assertEquals(0, $AxB->innerProduct($A));
$this->assertEquals(0, $AxB->innerProduct($B));
}