Which Persian astronomer is credited with introducing the tangent function and proving the Law of Sines for spherical geometry?
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Abu al-Wafa al-Buzjani
Abu al-Wafa al-Buzjani was a pioneering mathematician of the Islamic Golden Age who simplified trigonometry by introducing the tangent function and refining the use of secants and cosecants. His proof of the Law of Sines for spherical triangles was a major breakthrough that allowed for more accurate astronomical calculations and navigation. To honor his vast contributions to the field, a crater on the Moon is named "Abul Wáfa" after him.
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- Which mathematician of the Islamic Golden Age is credited with introducing the tangent function and proving the Law of Sines for spherical geometry?