# MathF.Asin() Method in C# with Examples

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

Syntax: public static float Asin (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.Asin(Single)  Method ` `using` `System; ` ` `  `class` `GFG { ` ` `  `    ``// Main Method ` `    ``public` `static` `void` `Main() ` `    ``{ ` ` `  `        ``// Declaring and initializing value ` `        ``float` `value = 0.7f; ` ` `  `        ``// getting absolute angle value in float ` `        ``// using Asin() method ` `        ``float` `result = MathF.Asin(value); ` ` `  `        ``// Display the value ` `        ``Console.WriteLine(``"Angle is {0}"``, result); ` `    ``} ` `} `

Output:

```Angle is 0.7753975
```

Example 2:

 `// C# program to demonstrate the ` `// MathF.Asin(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 Asin() method ` `        ``float` `result = MathF.Asin(value); ` ` `  `        ``// Display the value ` `        ``Console.WriteLine(``"Asin({0}) will be {1}"``, ` `                                   ``value, result); ` `    ``} ` `} `

Output:

```Asin(0.19) will be 0.1911621
Asin(NaN) will be NaN
Asin(-Infinity) will be NaN
Asin(Infinity) will be NaN
```

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