• ← ArcSin
• → Cos

ArcTan

Inverse tangent, arctangent (SymPy, mpmath, WMA)

ArcTan[z]

returns the inverse tangent of z.

• • ArcTan[1]

• • ArcTan[1.0]

• • ArcTan[-1.0]

• • ArcTan[1, 1]