Aryabhata

Aryabhata or Aryabhata I was the first of the major mathematician-astronomers and early physicist from the classical age of Indian mathematics and Indian astronomy. His works include the Āryabhaṭīya and the Arya-siddhanta.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 4.0

SINCOSTAN

Trigonometry that clicks — calculators, identities, and worked explanations for angles and waves.

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