Enter any number into the inverse tan calculator. The calculator will return the inverse tangent of that number as degrees or radians.

## Inverse Tan Formula

The following formula is used to calculate the inverse tangent of a value.

Arctan(x) = C

Tan C = X

- Where C is the angle
- X is the tan C

To calculate an angle using the inverse tangent, determine the tangent value of the angle.

## What is the inverse tangent?

An inverse tan, also known as a tangent, is the inverse of the tangent function or opposite. Since the tangent function normally takes an angle measurement and returns a value, the inverse tangent takes a value and returns an angle.

## How to calculate inverse tangent?

How to calculate inverse tangent?

**First, determine the value.**Measure the value you are taking the inverse tangent of.

**Next, take the inverse tangent.**Take the inverse tangent to determine the angle that corresponds to the value from step 1.

## FAQ

**How can inverse tan be used?**

The inverse tangent formula can be used to calculate the angle in a triangle when the tangent value (opposite/adjacent) is known.

**What is arctan?**

Arctan is just another name for inverse tan. The operation is the same.