System Namespace   Math Class

---

Returns the angle whose cosine is the specified number.

[ VB ]
Public Shared Function Acos ( _
   ByVal d As Double _
) As Double

[ C# ]
public static double Acos (
   double d
);

[ C++ ]
public: static double Acos (
   double d
);

[ JScript ]
public static function Acos (
   d : double
) : double;

d

A number representing a cosine, where -1 ≤ d ≤ 1.

An angle, q, measured in radians, such that 0 ≤ q ≤ π

-or-

NaN if d < -1 or d > 1.

Multiply the return value by 180/π to convert from radians to degrees.

Math Members

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