QUIZ -WHO discovered the the law of sines for spherical triangles] discovered the law of tangents for spherical triangles, and provided proofs for these laws?
Asked by truth exposed, 23 Oct '12 12:24 pm
Earn 10 points for answering
Nasir al-Din al-TusiAnswered by aflatoon, 23 Oct '12 12:25 pm
Nasir al-Din al-TusiAnswered by jameel ahmed, 23 Oct '12 12:35 pm
It is variously attributed to al-Khujandi, Abul Wafa Bozjani, Nasir al-Din al-Tusi and Abu Nasr Mansur.Answered by always fresh, 23 Oct '12 12:25 pm