## Supplementary Angle Calculator

A supplementary angle calculator is a handy online tool that helps you calculate the given angle’s supplementary angle. This supplementary angle calculator is easy to use. You just have to enter an angle, and then click on the Calculate button.

This online tool calculates and displays the supplementary angle to you. All these calculations will be done in a fraction of a second, which will eventually save a lot of your time and effort.

## What is Supplementary Angle?

Two angles are said to be supplementary if their sum is equal to 180 degrees. For example, 120Â° and 60Â° are supplementary angles because the sum of 120Â° and 60Â° is 180Â°.

## How to Calculate the Supplementary Angle?

To find the supplementary angle, you have to subtract the given angle by 180Â° to get the supplementary angle.

Supplementary Angle = 180Â° – Given Angle

Example: Find the supplementary angle of 45Â°.

Using the above formula, we will get:

Supplementary Angle = 180Â° – 45Â° => 135Â°

Therefore, the supplementary angle is 135Â°.