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I'm having trouble proving this limit using delta-epsilon definition

I would appreciate some help if possible

[tex]

\lim_{x\rightarrow \infty} \arctan(x)=\frac{\pi}{2}

[/tex]

I know that in order for the statement to be true,

Assuming

Epislon>0

Then |f(x)-L|<Epsilon for x> N

but i havn't had much experience working with trignometric functions, so I don't know how should I set my N equals to, and how could I convert that to |f(x)-L|< Epsilon

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# Homework Help: Proving a limit

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