acos

The acos method returns the arccosine of a number as a value between 0 and PI radians.

Syntax

System.Double acos(System.Double x);

Parameters

x

Number between -1 to 1.

Return Value

Returns the arccosine of a number. If the parameter x is outside the range -1 to 1, the method will return NaN.

Remarks

Member of Math.

Example