Enter the adjacent length and the hypotenuse length into the COS Ratio Calculator. The calculator will evaluate and display the COS Ratio.

## COS Ratio Formula

The following formula is used to calculate the COS Ratio.

**COSR = A / H**

- Where COSR is the COS Ratio ( )
- A is the adjacent length
- H is the hypotenuse length

## How to Calculate COS Ratio?

The following example problems outline how to calculate COS Ratio.

Example Problem #1:

- First, determine the adjacent length.
- The adjacent length is given as: 8.

- Next, determine the hypotenuse length.
- The hypotenuse length is provided as: 10.

- Finally, calculate the COS Ratio using the equation above:

COSR = A / H

The values given above are inserted into the equation below and the solution is calculated:

COSR = 8 / 10 = .80

Example Problem #2:** **

For this problem, the variables required are provided below:

adjacent length = 9

hypotenuse length = 15

Test your knowledge using the equation and check your answer with the calculator above.

COSR = A / H** = ?**