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

## 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:

1. First, determine the opposite side length.
• The opposite side length is given as: 3.
2. Next, determine the hypotenuse length.
• The hypotenuse length is provided as: 8.
3. 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 = ?