Function: Atan

Description

Returns the arctangent, also known as inverse tangent, value (in radians) of a given number.

Syntax

Atan(number)

Arguments

Number must be real number.

Return value

This function returns a value in radians.

Calculated field example

Atan returns the following for these values of x:

x	atan(x)
-√3≈-1.732	-π/3 ≈ -1.047
-1.000	-π/4 ≈ -0.785
-√3/3 = -0.577	-π/4 ≈ -0.785
0.000	0.000
√3/3 = 0.577	π/6 ≈ 0.524
1.000	π/6 ≈ 0.524
√3≈1.732	π/4 ≈ 0.785