may i know how to solve [ n^2 cos(n(pi)) ]/ n^2 + 42??(adsbygoogle = window.adsbygoogle || []).push({});

i have divided it by n^2 and get cos(n pi) / (42/n^2) and i can't solve already.pls help

what is the limit for cos (n pi) and sin (n pi)??

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# Homework Help: What is the limit for cos (n pi) and sin (n pi)?

**Physics Forums | Science Articles, Homework Help, Discussion**