\frac{\sin A+\cos A}{A-\cos A}+\frac{\sin A-\cos A}{\sin A+\cos A}=\fr – InterviewSolution

1.	\frac{\sin A+\cos A}{A-\cos A}+\frac{\sin A-\cos A}{\sin A+\cos A}=\frac{2}{\operatorname{atm}^{2} A-\cos ^{2} A}=\frac{2}{1-2 \cos ^{2} A}
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