JavaScript Math.acos() Method

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JavaScript Math.acos() Method

The Math.acos() method returns the arc-cosine of the given number.


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<!DOCTYPE html> <html> <body> <script> var result = Math.acos(0.5); document.write(result); </script> </body> </html>



Parameter Values

xRequiredSpecifies a number.

Return Value

NumberThe arc-cosine of the given number.
The return value will be between 0 and π, if the given value is between -1 and 1.
The return value is represented in radians.
NaNIf the given value is not between -1 and 1.


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