Math::Asin Math::Asin(x): float Calculates arc sine of x. Table 1. Parameters x number Real number x, with −1 ≤ x ≤ 1 Return The angle in radians whose sine is x println(Math::Asin(1)); // Will print "1.570796" println(Math::Asin(0.5)); // Will print "0.523599"