On this page is a *tangent calculator*, for either angles or degrees. Enter the angle's measurement, choose your units, and run the calculator to see the tangent.

## Tangent Calculator for Angles or Radians

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## Using the Tangent Calculator

To use the tool to find the tangent, enter the measurement of the angle in either degrees or radians, choose the units, and compute.

**Angle**- measurement of your angle (in degrees or radians)**Degrees or Radians?**- choose the units in the menu

Once you're happy with the inputs, click the "Compute Tangent" button.

**Tangent**- the tangent, or ratio of the opposite side over the adjacent side's measurement

## What is the tangent?

For a given angle in a right triangle, tangent is the ratio of the opposite side to the adjacent side.

Trigonometric functions can also be used to find the ratio between sides of a unit circle (a circle with radius 1).

### Tangent as a formula

As a trigonometry formula, tangent is usually abbreviated as "tan", as in the following equation:

\tan(\theta)

If you already know the tangent, use the inverse tangent or the arctangent to find the angle.