fails:Math#atan returns the arctangent of the argument
fails:Math#atan returns the arctangent for Complex numbers
fails:Math.atan returns the arctangent of the argument
fails:Math.atan returns the arctangent for Complex numbers
fails:"Math#atan returns the arctangent of the argument"
fails:"Math#atan returns the arctangent for Complex numbers"
fails:"Math.atan returns the arctangent of the argument"
fails:"Math.atan returns the arctangent for Complex numbers"
