A) \[\frac{{{e}^{x}}\,\sin \,y+{{e}^{y}}\sin x}{{{e}^{y}}\cos \,x-{{e}^{x}}\cos \,y}\]
B) \[\frac{{{e}^{x}}\,\sin \,y+{{e}^{y}}\sin \,y}{{{e}^{y}}\cos \,x-{{e}^{x}}\cos \,y}\]
C) \[\frac{{{e}^{x}}\,\sin \,y-{{e}^{y}}\sin \,x}{{{e}^{y}}\cos \,x-{{e}^{x}}\cos \,y}\]
D) None of these.
Correct Answer: A
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