I was tasked with determining whether the following series:
$$\sum_{n=1}^{\infty} \tan\left(\frac{1}{n}\right) $$
converges.
I tried employing the integral test which failed and produced incalculable integrals. Other methods didn't prove effective also. I was suggested that the Maclauren series might be of use here, but I'm not sure how to employ it.
Answer
Or by limit comparison test with $\sum\frac1n$ since by standard limit for $x\to 0\implies\frac{\tan x}{x}\to 1$ and then
$$\frac{\tan\left(\frac{1}{n}\right)}{\frac1n}\to1$$
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