Acos
Function Acos( numeric expression )
Returns the arccosine (inverse cosine) of the cosine numeric expression.
Syntax a = Acos( b )
Remarks
Acos will return the inverse cosine (the angle in degrees) of cosine x where x is in the range -1 to 1.
If Acos is passed a parameter outside of the range -1 to 1, an error will occur.
See Also: