Perchance – platform for creating and sharing random generatorsperchance.org 2andrei-akopian1ydiscuss
GitStar Ranking – Top Users, Organizations, and Repositoriesgitstar-ranking.com 2andrei-akopian1ydiscuss
Bhāskara I's cosine approximation formula cos=(pi^2-4x^2)/(pi^2+x^2)en.wikipedia.org 3andrei-akopian2ydiscuss