(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I need to show that series cos(n) for n=0,1,...,inf is bounded.

2. Relevant equations

3. The attempt at a solution

I understand that each of the terms of the sequence is bounded by 1. However, I cannot show the bound for the entire sequence? Could someone give some hints?

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# Homework Help: Sequence Bound

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