\frac{\cos 9^{0}+\sin 9^{\circ}}{\cos 9^{0}-\sin 9^{0}}=\cot 36^{\circ – InterviewSolution

1.	\frac{\cos 9^{0}+\sin 9^{\circ}}{\cos 9^{0}-\sin 9^{0}}=\cot 36^{\circ}: Prove that
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