math:atan2( $y as xs:double, $x as xs:double ) as xs:double
Returns the arc tangent of y/x, in radians, in the range from -pi/2 to +pi/2 (inclusive), using the signs of y and x to determine the appropriate quadrant.
Parameters | |
---|---|
y | The floating point dividend. |
x | The floating point divisor. |
math:atan2(36.23, 5.234) => 1.42732303452594