OpenOffice3.org Calc 3. Mathematical Functions

ATAN(Number) Function

Calculates the arctangent of the argument “Number”. Returns a numeric value in radians. The argument “Number” can take any numeric value, positive, negative or zero. This function returns a number greater than or equal to -pi/2 and less than or equal to pi/2. For example:

=ATAN(0) Returns 0.
=ATAN(1) Returns 0,785.
=ATAN(-2) Returns -1,107.

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