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Math.acos Function (JavaScript)

Returns the arccosine of a number.

Math.acos(number) 

The required number argument is a numeric expression for which the arccosine is needed.

The return value is the arccosine of the number argument, in radians.

Applies To: Math Object (JavaScript)

Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards. See Version Information.

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