Microsoft Access Function Library: Atn()

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Function: Atn()

Purpose: The Atn() function is used to obtain the arctangent value of a number.

Usage: Atn(number)

Returns: Double containing the angle in radians corresponding to the ratio of two sides of a right triangle specified as number.

Examples and Special Cases

Atn(1) = 0.785

Atn(0) = 0