C MathAtan Examples
In this tutorial, we will learn about the C# Math.Atan() method, and learn how to use this method to find the arc tangent of given double value, with the help of examples.
AtanDouble
Math.Atan(d) returns the angle whose tangent is the specified number d
. The angle returned shall be in radians.
Syntax
The syntax of Atan(d) method is
Math.Atan(Double d)
where
Parameter | Description |
---|---|
d | The double value for which we have to find arc tangent. |
Return Value
The method returns value of type double.
Example 1 MathAtan10
In this example, we will find the angle for which tangent value is 1.0. We shall print the result both in radians and in degrees.
We know that tan(45 degrees) = 1.0. So, we should get the PI/4 radians as return value.
C# Program
using System; class Example { static void Main(string[] args) { Double d = 1.0; Double angle = Math.Atan(d); Console.WriteLine($"Angle in radians : {angle}"); Console.WriteLine($"Angle in degrees : {(180 / Math.PI) * angle}"); } }
Output
Angle in radians : 0.785398163397448 Angle in degrees : 45
Example 2 MathAtan0
In this example, we will find the angle for which tangent value is 0.0. We know that tan(0 degrees) = 0. So, we should get the zero radians as return value.
C# Program
using System; class Example { static void Main(string[] args) { Double d = 0; Double angle = Math.Atan(d); Console.WriteLine($"Angle in radians : {angle}"); Console.WriteLine($"Angle in degrees : {(180 / Math.PI) * angle}"); } }
Output
Angle in radians : 0 Angle in degrees : 0
Example 3 AtanPositive Infinity
In this example, we will find the angle for which tangent value is Positive Infinity. We know that tan(90 degrees) = + Infinity. So, we should get the PI/2 radians as return value.
C# Program
using System; class Example { static void Main(string[] args) { Double d = Double.PositiveInfinity; Double angle = Math.Atan(d); Console.WriteLine($"Angle in radians : {angle}"); Console.WriteLine($"Angle in degrees : {(180 / Math.PI) * angle}"); } }
Output
Angle in radians : 1.5707963267949 Angle in degrees : 90
Conclusion
In this C# Tutorial, we have learnt the syntax of C# Math.Atan() method, and also learnt how to use this method with the help of C# example programs.