Al-Battani (Albategnius): The Trigonometrical Genius
What were al-Battani’s contributions to trigonometry? How did al-Battani’s observations differ from Ptolemy’s theory? What is the significance of al-Battani’s discovery of annular eclipses? Abu Abdallah Muhammad Ibn Jabir Ibn Sinan Al-Battani Al-Harrani, known in the West as Albategnius, is considered the greatest astronomer of his time and one of the greatest during the Middle…