- Function ArcCos(x)
ArcCos
ArcCos(
x ! (input) numerical expression
)
Arguments
- x
A scalar numerical expression in the range \([-1,1]\).
Return Value
The
ArcCos
function returns the arccosine of x in the range 0 to \(\pi\) radians.
Graph
Example
_p_returnM1 := arcCos(-1); ! returns pi
_p_returnZ := arcCos( 0); ! returns half pi
_p_returnP1 := arcCos( 1); ! returns 0
Note
A run-time error results if x is outside the range \([-1,1]\).
The function
ArcCos
can be used in constraints of nonlinear mathematical programs.
See also
The functions
ArcSin
,ArcTan
,Cos
. Arithmetic functions are discussed in full detail in Arithmetic Functions of the Language Reference.