Mathematical Functions in .NET / Logarithmic Function in .NET / Trigonometric Functions in .NET
The common logarithmic, trigonometric functions are available in the .NET framework as part of System.Math class. Here is a list of functions that are available
Name | Description |
Abs | Overloaded. Returns the absolute value of a specified number. |
Acos | Returns the angle whose cosine is the specified number. |
Asin | Returns the angle whose sine is the specified number. |
Atan | Returns the angle whose tangent is the specified number. |
Atan2 | Returns the angle whose tangent is the quotient of two specified numbers. |
BigMul | Produces the full product of two 32-bit numbers. |
Ceiling | Overloaded. Returns the smallest integer greater than or equal to the specified number. |
Cos | Returns the cosine of the specified angle. |
Cosh | Returns the hyperbolic cosine of the specified angle. |
DivRem | Overloaded. Calculates the quotient of two numbers and also returns the remainder in an output parameter. |
Exp | Returns e raised to the specified power. |
Floor | Overloaded. Returns the largest integer less than or equal to the specified number. |
IEEERemainder | Returns the remainder resulting from the division of a specified number by another specified number. |
Log | Overloaded. Returns the logarithm of a specified number. |
Log10 | Returns the base 10 logarithm of a specified number. |
Max | Overloaded. Returns the larger of two specified numbers. |
Min | Overloaded. Returns the smaller of two numbers. |
Pow | Returns a specified number raised to the specified power. |
Round | Overloaded. Rounds a value to the nearest integer or specified number of decimal places. |
Sign | Overloaded. Returns a value indicating the sign of a number. |
Sin | Returns the sine of the specified angle. |
Sinh | Returns the hyperbolic sine of the specified angle. |
Sqrt | Returns the square root of a specified number. |
Tan | Returns the tangent of the specified angle. |
Tanh | Returns the hyperbolic tangent of the specified angle. |
Truncate | Overloaded. Calculates the integral part of a number. |
How to use Mathematical Function PI in C# (.NET)
Mathematical PI, which represents the ratio of the circumference of a circle to its diameter, is specified by the constant, π and can be retrieved by
Console.WriteLine("Value of PI = " + Math.PI);
Similarly other trigonometric functions like Sin, Cos, Tan etc can be used in C# as follows:
public static void MathFunctions()
{
Console.WriteLine("Value of PI = " + Math.PI);
Console.WriteLine("Value of Tan 45 = " + Math.Tan(45*Math.PI/180));
Console.WriteLine("Value of Cos 45 = " + Math.Cos(45 * Math.PI / 180));
Console.WriteLine("Value of Sin 45 = " + Math.Sin(45 * Math.PI / 180));
}
Functions Sin, Cos, Tan etc accept angle in Radians (NOT in degrees). If you want to use degrees as input, use appropriate conversion functions
Radians to Degree Conversion using C#
public static double Radians2Degrees(double degrees)
{
try
{
return Math.PI * degrees / 180;
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
return -1;
}
}
Console.WriteLine("Value of Tan 45 = " +
Math.Tan(Radians2Degrees(45)));
The output will be as shown below