returns arctangent of a number · from excel · excel: not yet compared · sheets: not yet compared

signature

ATAN(number)

returns: number

argument	required
number	required

examples

formula and result, taken from the engine's own test suite — every result below is asserted in CI, not written by hand.

related

• ABS returns absolute value of a number
• ACOS returns arccosine of a number
• ACOSH returns inverse hyperbolic cosine
• ACOT returns the arccotangent of a number
• ACOTH returns the inverse hyperbolic cotangent
• ADD adds two numbers — sheets exposes the + operator as a function