Calculates the arc tangent using the tangent y/x of an angle.
@ATan2( x ; y )
x
Number or number list. The denominator of the tangent value y / x.
y
Number or number list. The numerator of the tangent value y / x.
If either parameter is a list, the function operates pair-wise on the list elements, and the return value is a list with the number of elements in the larger list.
angle
Number. An angle, in radians, from -pi through pi. This represents an angle between -180 and 180 degrees, depending on the sign of x and y (see the list below).
If |
Then angle is in the range |
---|---|
xis positive yis positive |
0 to pi/2 (Quadrant I) |
x is negative y is positive |
pi/2 to pi (Quadrant II) |
x is negative y is negative |
-pi to -pi/2 (Quadrant III) |
x is positive y is negative |
-pi/2 to 0 (Quadrant IV) |
@ATan2( 1; 1 )
@ATan2( -1; 1 )
@ATan2 ( 1; 2 )
@ATan2 ( 1 : : (-1) : 1; 1 : 1 : 2 )
ATn2 function in LotusScript® language