Any other method for sin18 calc

Question

can someone provide any other way in which I can obtain the value of sin18.

Answer 1

https://www.quora.com/in/How-can-I-find-the-value-of-sin18%C2%B0-1

https://www.teachoo.com/5742/1407/Find-values-of-sin-18--cos-18--cos-36--sin-36--sin-54--cos-54/category/Finding-Value-of-trignometric-functions--given-angle/

Answer 2

Here you go : 0.309016994374947