Were Nasir al-Din al-Tusi and Al-Ghazali both mathematicians?
Al-Ghazali Abū Ḥāmid Muḥammad ibn Muḥammad al-Ghazālī ( ; Arabic: أبو حامد محمد بن محمد الغزالي‎ ‎ ;  1058 – 19 December 1111), shortened as Al-Ghazali in Arabic or Ghazali in Persian and known as Algazelus or Algazel to the Western medieval world, was a Persian theologian, jurist, philosopher, and mystic.
Abu al-Wafa' Buzjani Abū al-Wafāʾ, Muḥammad ibn Muḥammad ibn Yaḥyā ibn Ismāʿīl ibn al-ʿAbbās al-Būzjānī or Abū al-Wafā Būzhjānī (Persian: ابوالوفا بوزجانی or بوژگانی‎ ‎ ) (10 June 940 – 15 July 998) was a Persian mathematician and astronomer who worked in Baghdad. He made important innovations in spherical trigonometry, and his work on arithmetics for businessmen contains the first instance of using negative numbers in a medieval Islamic text.