Multiple choice general knowledge history Who discovered the trigonometric functions? Pingala Aryabhatta Charak Madhava of Sangamagrama Reveal answer Fill a bubble to check yourself B Correct answer Explanation Aryabhatta, in his work Aryabhatiyam (499 CE), defined trigonometric functions including sine (jya), cosine (kojya), versine (utkrama-jya), and inverse sine. This preceded similar developments in Islamic and European mathematics by centuries.