The Excel TAN function is a mathematical function that calculates the tangent of an angle in radians. It is useful for trigonometric calculations and can help you find the slope or angle in various mathematical and engineering applications.

## Syntax

**TAN(number)**

## Arguments

number | The angle in radians for which you want to find the tangent. |

## How to Use

To use the TAN function in Excel, follow these steps:

- Open an Excel worksheet where you want to perform the calculation.
- Select the cell where you want the result to appear.
- Enter the formula
`=TAN(number)`

, replacing “number” with the angle in radians for which you want to calculate the tangent. - Press Enter to get the result.

Here are some examples of using the TAN function:

1 |
=TAN(0.5236) |

This formula will return the tangent of 0.5236 radians, which is approximately 0.577.

1 |
=TAN(1.0472) |

This formula will return the tangent of 1.0472 radians, which is approximately 1.732.

Remember that the TAN function expects the angle in radians. If you have an angle in degrees, you can convert it to radians using the RADIANS function. For example:

1 |
=TAN(RADIANS(30)) |

This formula calculates the tangent of 30 degrees by first converting 30 degrees to radians.

## Additional Information

The result of the TAN function is the tangent of the given angle. Tangent is a trigonometric function that relates the ratio of the length of the side opposite an angle to the length of the side adjacent to that angle in a right triangle. It is commonly used in geometry, physics, and engineering for various calculations, such as finding slopes, angles, and distances.