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Math.abs()

syntax:

Math.abs(x)

where:

x - a number.

 

return:

number - the absolute value of x. Returns NaN if x cannot be converted to a number.

 

description:

Computes the absolute value of a number.

 

example:

//The function returns the absolute value

// of the number -2 (i.e.

//the return value is 2):

var n = Math.abs(-2);

 


Math.acos()