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 = ?