JavaScript Math method: atan2()
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The atan2() method (of the Math object)
returns the (principal) arctangent of a real number.
It
has the following syntax with the following parameters:
Math.atan2(y,x)
|
Parameter
|
Required / Optional
|
Description
|
|
y
|
Required
|
y-coordinate
|
|
x
|
Required
|
x-coordinate
|
Note: many computer
languages have an atan2 function, but the ordering of the parameters is not the
same across all languages
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