A line makes angles \[\theta ,\phi \] and \[\psi \] with x, y, z axes respectively. Consider the following 1. \[{{\sin }^{2}}\theta +{{\sin }^{2}}\phi ={{\cos }^{2}}\psi \] 2. \[{{\cos }^{2}}\theta +{{\cos }^{2}}\phi ={{\sin }^{2}}\psi \] 3. \[{{\sin }^{2}}\theta +{{\cos }^{2}}\phi ={{\cos }^{2}}\psi \] Which of the above is/are correct?

• A. 1 only
• B. 2 only
• C. 3 only
• D. 2 and 3