Pi is a built-in R constant whose value is **3.141593**. Pi is the ratio of the circumference of a circle to its diameter.

**Syntax**

`pi`

**Visual representation**

**Example 1: Basic usage**

`print(pi)`

**Output**

`[1] 3.141593`

**Example 2: Exponential value of pi**

To calculate the exponential value of pi, use the **exp()** function.

`exp(pi)`

**Output**

`[1] 23.14069`

**Example 3: Cos value of pi**

To calculate the cosine value of pi, use the cos() function.

`cos(pi)`

**Output**

`[1] -1`

**Example 4: Sine value of pi**

To find the sine value of pi, use the sin() function.

`sin(pi)`

**Output**

`[1] 1.224647e-16`

**Example 5: ****Tangent of pi**

To calculate the tangent of pi, use the tan() function and pass the pi.

`tan(pi)`

**Output**

`[1] -1.224647e-16`

**Example 6: ****Arccos value of pi**

To calculate the arccos value of pi, use the acos() and pass the pi.

`acos(pi)`

**Output**

```
[1] NaN
Warning message:
In acos(pi) : NaNs produced
```

It returns the NaN value.

**Example 7: ****Arcsin value of pi**

To calculate the arccos value, use the asin() function.

`asin(pi)`

**Output**

```
[1] NaN
Warning message:
In asin(pi) : NaNs produced
```

It returns NaN too.

**Example 8: ****Arctan value of pi**

To calculate the arccos value, use the atan() function.

`atan(pi)`

**Output**

`[1] 1.262627`

That’s it!

Krunal Lathiya is a seasoned Computer Science expert with over eight years in the tech industry. He boasts deep knowledge in Data Science and Machine Learning. Versed in Python, JavaScript, PHP, R, and Golang. Skilled in frameworks like Angular and React and platforms such as Node.js. His expertise spans both front-end and back-end development. His proficiency in the Python language stands as a testament to his versatility and commitment to the craft.