asin¶ Syntax¶ asin(x) Parameters¶ x a numeric expression. Returns¶ The arc sine of x. The result is in the closed interval [-π/2, π/2]. Description¶ This action calculates the arc sine, or inverse sine, of the given value. Examples¶ my_numeric = asin(some_number) See Also¶ acos acosh asin asinh atan.md atan2 atanh cos cosh sin sinh tan tanh