| Calling Sequence
| arcsin(x)
|
| Parameters
| | Name | Type | Description |
|
| x
| numeric | a numerical value, |x| <= 1 |
|
| Return Type
| numeric |
| Synopsis
| This function computes the inverse of the
trigonometric sine function. For all -1 <= x <= 1, sin(arcsin(x))=x.
For all -Pi/2 <= y <= Pi/2, arcsin(sin(y))=y. The value returned
by arcsin is a principal value, it is between (-Pi/2 and Pi/2). |
| References
| Handbook of Mathematical Functions, M. Abramowitz and
I. Stegun, Ch 4.4 |
| Examples
| > arcsin(0);
0
> arcsin(1/2);
0.5236
> arcsin(1);
1.5708
> arcsin(-1);
-1.5708
|
| See also
| arctan, cos, sin, tan |