MathF.Acos() Method in C# with Examples

MathF.Acos(Single) Method is used to return the angle whose cosine is given as a single or float value argument. If the argument is NaN, then the result will be NaN.

Syntax: public static float Acos (float x);
Here, it takes a standard floating point number.

Return Value: This method returns an angle θ, measured in radians, its type is System.Single and value will be less than Single.MaxValue.

Below programs will illustrate the use of the above-discussed method:

Example 1:

 // C# program to demonstrate the // MathF.Acos(Single) Method using System;    class GFG {        // Main Method     public static void Main()     {            // Declaring and initializing value         float value = 0.5f;            // getting absolute angle value in float         // using Acos() method         float result = MathF.Acos(value);            // Display the value         Console.WriteLine("Angle is {0}", result);     } }

Output:

Angle is 1.047198

Example 2:

 // C# program to demonstrate the // MathF.Acos(Single) Method using System; using System.Globalization;    class GFG {        // Main Method     public static void Main()     {         // calling get() method         get(0.19f);         get(Single.NaN);         get(Single.NegativeInfinity);         get(Single.PositiveInfinity);     }        // defining get() method     public static void get(float value)     {            // getting absolute angle value in float         // using Acos() method         float result = MathF.Acos(value);            // Display the value         Console.WriteLine("Acos({0}) will be {1}",                                    value, result);     } }

Output:

Acos(0.19) will be 1.379634
Acos(NaN) will be NaN
Acos(-Infinity) will be NaN
Acos(Infinity) will be NaN

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