Mathematical Functions in C# / Logarithmic Function in C# / Trigonometric Functions in C#

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