A) \[\frac{\cos \theta -\cos \phi }{\sin \phi -\sin \theta }\]
B) \[\frac{\sin \phi -\sin \theta }{\cos \theta -\cos \phi }\]
C) \[\frac{\cos \theta +\cos \phi }{\sin \phi +\sin \theta }\]
D) \[\frac{\sin \phi +\sin \theta }{\cos \theta +\cos \phi }\]
E) None of these
Correct Answer: B
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