ACOS (TSQL Function)
Returns the arccosine, or inverse cosine, of a number.
Syntax
ACOS ( float_expression )
Arguments
- float_expression
- is an expression of type
float
, in the range [-1, 1]. Values outside this range raise an error.
Return Types
Returns float
.
Examples
PRINT ACOS(-1), ACOS(0), ACOS(0.5), ACOS(1);
The result is:
3.14159265358979| 1.5707963267949| 1.0471975511966| 0|
With value out of range, an error is raised:
PRINT ACOS(1.1)
The result is:
<Arithmetic error. FLOAT is NaN.>