Name
Math.asin( ) Method — compute the arc sine of a number
Availability
Flash 5; may be used when exporting Flash 4 movies
Synopsis
Math.asin(x)
Arguments
- x
A number between -1.0 and 1.0 (the sine of an angle).
Returns
The angle, in radians, whose sine is x.
If x is not in the range -1.0 to 1.0,
returns NaN.
Description
The arc sine function (sometimes written as sin-1) is the inverse of the sine function. It returns the angle whose sine has the specified value, in radians. The return value is in the range -π/2 to π/2 radians.
Example
trace (Math.asin(1.0)); // Displays: 1.5707... (i.e., pi/2) trace (Math.asin(0.0)); // Displays: 0
See Also
Math.acos, Math.atan,
Math.sin
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