# Cosine Calculator

In a right angled triangle, the *cosine* of an angle is: The length of the adjacent side divided by the length of the hypotenuse.Represented as 'cos'

## What is Cosine Calculator?

'Cuemath's Cosine Calculator' is an online tool that helps to calculate the cosine value for a given angle theta. This online Cosine Calculator helps you to calculate the cosine value for a given angle theta in a few seconds.

## How to Use Cosine Calculator?

Please follow the steps below to find the cosine value for a given angle theta:

**Step 1:**Enter the angle theta in the given input box. Enter values in degrees**Step 2:**Click on the**"Calculate"**button to find the cosine value for a given angle theta.**Step 3:**Click on the**"Reset"**button to clear the fields and find the cosine value for the different angles.

## How to Find Cosine Value?

The cosine function is defined as the ratio of the length of the base to that of the length of the hypotenuse in a right-angled triangle. The sign is a trigonometric function of an angle. It is denoted as cosθ, where θ is the angle between the two sides.

**Example 1:**

Find the cosine value if the θ = 60°

**Solution:**

Given θ = 60°

cos60° = 1 / 2

Similarly, you can try the calculator to find the cosine values for the following:

- θ = 30°
- θ = 150°