数学を初めとした理系の学問と哲学について　１４

lim(x→∞)x*tan(π/x)/(1+((1tan(π/x))^2)/3)

https://www.wolframalpha.com/input/?i=lim%28x%E2%86%92%E2%88%9E%29x*tan%28%CF%80%2Fx%29%2F%281%2B%28%281tan%28%CF%80%2Fx%29%29%5E2%29%2F3%29