Who was born earlier, Habash al-Hasib al-Marwazi or Mostafa El-Sayed?
Habash al-Hasib al-Marwazi: Ahmad ibn 'Abdallah Habash Hasib Marwazi (766 - d. after 869 in Samarra, Iraq ) was a Persian astronomer, geographer, and mathematician from Merv in Khorasan who for the first time described the trigonometric ratios: sine, cosine, tangent and cotangent. Mostafa El-Sayed: Mostafa A. El-Sayed (Arabic: مصطفى السيد) (born 8 May 1933) is an Egyptian chemical physicist, a leading nanoscience researcher, a member of the National Academy of Sciences and a US National Medal of Science laureate.
Ahmad ibn 'Abdallah Habash Hasib Marwazi