Math::Atan Math::Atan(x): float Calculates arc tangent of x. Table 1. Parameters x number Real number x, with −1 ≤ x ≤ 1 Return The angle in radians whose arc tangent is x println(Math::Atan(1)); // Will print "0.785398" println(Math::Atan(0.5)); // Will print "0.463648"