\cot ^ 2 A ( \frac \sec A - 1 1 %2B \sin A ) %2B \sec – InterviewSolution

1.	\cot ^ 2 A ( \frac \sec A - 1 1 %2B \sin A ) %2B \sec ^ 2 A ( \frac \sin A - 1 1 %2B \sec A )
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