Returns the inverse cosine of x, in that if cos(val)=n, arccos(n)=val, and the resulting number will be between pi and 0.

NOTE:This will only accept a number between -1 and 1 (anything else will throw an error).

arccos(x)

Argument | Description |
---|---|

x | The angle (in radians) to return the inverse cosine of. |

Real

val = arccos(0);

This will set val to pi/2.