InfiniteSeries Bennett Intermediate
2019

Problem - 4602

Determine whether or not these two series converge: $$(A)\ \ \sum_{n=1}^{\infty}\sin\left(\frac{\cos{n}}{n^2}\right)\qquad (B)\ \ \sum_{n=1}^{\infty}\cos\left(\frac{\sin{n}}{n^2}\right)$$

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