Which of the following is true about cos.1.cos has no dipole moment because the molecule is linear and dipole moments cancel in linear molecules.2.cos has a dipole moment because it is asymmetric and the dipole moments do not completely cancel.3.cos has a dipole moment because the molecule is bent and the dipole moments combine.4.cos has no dipole moment because it is bent and the dipole moments cancel5.cos has no dipole moment because its bonds are all non polar.