Calculate the inverse tangent of a number using this calculator. This arctan calculator converts a value to its inverse tangent. Simply enter the number you wish you calculate.

## Arctan Formula

The following formula can be used to calculate the arctan of a value.

Arctan(x) = C

Tan C = X

- Where x is a value
- C is an angle in radians

## Arctan Definition

**The arctan is defined as the inverse value of the tangent of any number or value. **

## How to calculate arctan?

How to calculate an arctan?

**First, measure the angle.**Measure or determine the angle are value you want to take the arc tangent of.

**Next, take the tangent.**Calculate the tangent of that number.

**Finally, take the inverse.**Inverse the value from step to to get your arctan value.

## FAQ

**What is arctan?**

Arctan is a term used in math to describe the inverse tangent of a value.

**How is a arctan used?**

Arctan can be used to calculate the angle of a triangle when the opposite and adjacent sides of the triangle are known. Simply take the ratio of opposite to adjacent and plug the ratio into the formula above.

**Is arctan in degrees or radians?**

Arctan calculates the value in radians, but this can be converted to degrees using the calculate above.

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