atan2[]

Returns the arc tangent of yx, in the interval [-180,180] degrees. | </WRAP>

#<result> = atan2[1, 1]
(print,#<result>)

result: 45

#<result> = atan2[0, -1]
(print,#<result>)

result: 180

sin, asin, cos, acos, tan, atan, pi