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Look up atan in Wiktionary, the free dictionary.
Atan may refer to:
Places
editPeople
edit- Atan Shansonga (born 1955), Zambian diplomat
- Çağdaş Atan, Turkish footballer
- Cem Atan, Turkish footballer
Other
edit- Attan, a Pashtun and Afghan traditional dance
- arctangent, a trigonometric function
- atan2, the two-argument function implementing the arctangent in many computer languages