Enter the opposite side length and the hypotenuse length into the Sine Ratio Calculator. The calculator will evaluate and display the Sine Ratio.

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## Sine Ratio Formula

The following formula is used to calculate the Sine Ratio.

**SINR = O / H**

- Where SINR is the Sine Ratio ( )
- O is the opposite side length
- H is the hypotenuse length

## How to Calculate Sine Ratio?

The following example problems outline how to calculate Sine Ratio.

Example Problem #1:

- First, determine the opposite side length.
- The opposite side length is given as: 3.

- Next, determine the hypotenuse length.
- The hypotenuse length is provided as: 8.

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

SINR = O / H

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

SINR = 3 / 8 = .375 ( )

Example Problem #2:** **

For this problem, the variables required are provided below:

opposite side length = 5

hypotenuse length = 9

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

SINR = O / H** = ?**