Math.atan2()
syntax: |
Math.atan2(x, y) |
where: |
x - x coordinate of the point.
x - y coordinate of the point.
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return: |
number - an implementation-dependent approximation to the arc tangent of the quotient, y/x, of the arguments y and x, where the signs of the arguments are used to determine the quadrant of the result.
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description: |
It is intentional and traditional for the two-argument arc tangent function that the argument named y be first and the argument named x be second. The return value is expressed in radians and ranges from -pi to +pi.
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example: |
//The arctangent of the quotient y/x //is returned in the //following function: function compute_arctangent_of_quotient(x, y) { return Math.arctangent2(x, y) } |