# Mathematical functions (math class) in VB.NET

There are many situation when we need some mathematical operations in our program, such as some trigonometric and logarithmtics.

.Net framework provides us Math class of System namespaces that allows us very rich set of static methods. It also contains e and PI.

These are the list of some mathematical function:

 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. Equals Overloaded. Determines whether two Object instances are equal. (inherited from Object) Exp Returns e raised to the specified power. Floor Overloaded. Returns the largest integer less than or equal to the specified number. GetHashCode Serves as a hash function for a particular type. (inherited from Object) GetType Gets the Type of the current instance. (inherited from Object) 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. ReferenceEquals Determines whether the specified Object instances are the same instance. (inherited from Object) 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. ToString Returns a String that represents the current Object. (inherited from Object) Truncate Overloaded. Calculates the integral part of a number.

It is very important to know that those methods take double type parameters  returns double type value.

Example :

Private Sub Example_MathClassFunctions()

Dim i As Integer

i = Math.Pow(5, 5)

MessageBox.Show("5 to the power= " & i)

i = Math.Sqrt(5)

MessageBox.Show("squre root of 5= " & i)

i = Math.Round(5.68743)

MessageBox.Show("round figure of 5.68743= " & i)

i = Math.Min(4, 7)

MessageBox.Show("minimum value in 4 and 7= " & i)

Dim j As Double

j = Math.Log(15)

MessageBox.Show("Log value of 15 = " & j)

j = Math.Sin(90)

MessageBox.Show("sin 90 = " & j)

Dim x As Integer = 511

Dim y As Integer = 50

Dim Value As Integer

Dim Remainder As Integer

Value = Math.DivRem(x, y, Remainder)

MessageBox.Show("value is  = " & Value & " and reminder is = " & Remainder)

End Sub

We already say that members and methods of math class are static ,means they are accessed using the class name itself instead of its object.