What is the value of \(\rm \frac{\sin \theta+\cos \theta}{\sin \theta-\cos \theta}+\rm \frac{\sin \theta-\cos \theta}{\sin \theta+\cos \theta}?\)

1
1/(sin2 θ - cos2 θ)
2
2(sin2 θ - cos2 θ)
3
2/(sin2 θ - cos2 θ)
4
sin2 θ - cos2 θ

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