What is the limit as x approaches infinity of $cos(x)$ ?

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Answer 1 · 2014-08-14T08:24:03

The limit does not exist.

Most instructors will accept the acronym DNE. The simple reason is that cosine is an oscillating function so it does not converge to a single value.

A related question that does have a limit is $lim_(x->oo) cos(1/x)=1$ .

What is the limit as x approaches infinity of cos(x)cos(x)?