atan(float)

Gets the arc tangent of a value.

float atan(
    float fValue
);

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Parameters

fValue

Value to return the arc tangent of.

Description

Arc tangent is the inverse of the tan() function. Thus, given an fValue that is some ratio of the opposite side to the adjacent side of a right triangle, the atan function returns the appropriate angle (in degrees) of that triangle. The atan function returns a value from -90.0 to 90.0.

Version

1.31

See Also

functions:

tan

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author: Charles Feduke, additional contributor(s): Paul Catalano