# Python math module

Python math module is defined as the most popular mathematical functions, which includes trigonometric functions, representation functions, logarithmic functions, etc. Furthermore, it also defines two mathematical constants, i.e., Pie and Euler number, etc.

Pie (n): It is a well-known mathematical constant and defined as the ratio of circumstance to the diameter of a circle. Its value is 3.141592653589793.

Euler's number(e): It is defined as the base of the natural logarithmic, and its value is 2.718281828459045.

There are different math modules which are given below:

## math.log()

This method returns the natural logarithm of a given number. It is calculated to the base e.

Example

Output:

```log(fabs(x), base) is : -6.698970004336019
```

## math.log10()

This method returns base 10 logarithm of the given number and called the standard logarithm.

Example

Output:

```log10(x) is : 1.1139433523068367
```

## math.exp()

This method returns a floating-point number after raising e to the given number.

Example

Output:

```The given number (x) is : 0.05
e^x (using exp() function) is : 0.05127109637602412
```

## math.sqrt()

This function returns the square root of any given number.

Example

Output:

```sqrt of 20 is 4.47213595499958
sqrt of 14 is 3.7416573867739413
sqrt of 17.8995 is 4.230780069916185
```

## math.expm1()

This method returns e raised to the power of any number minus 1. e is the base of natural logarithm.

Example

Output:

```The given number (x) is : 0.2
e^x (using expml() function) is : 0.22140275816016985
```

## math.cos()

It returns the cosine of any number, in radians.

Example

Output:

```Given angle : 1.0471975511965976
cos(x) is : 0.5000000000000001
```

## math.sin()

It returns the sine of any number, in radians.

Example

Output:

```Given angle : 1.0471975511965976
sin(x) is : 0.8660254037844386
```

## math.tan()

It returns the tangent of any number, in radians.

Example

Output:

```Given angle : 1.0471975511965976
tan(x) is : 1.7320508075688767
```
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