# "SOH-CAH-TOA" FAILED to Show You This

- Author:
- Tim Brzezinski

By now, you're probably familiar with the 3 main ratios used within right-triangle trigonometry.
If

**angle A is an acute angle of any RIGHT TRIANGLE**, then you've already learned that:**sine of A = leg opposite A / hypotenuse cosine of A = leg adjacent A / hypotenuse tangent of A = leg opposite A / leg adjacent A**The applet below depicts the**TRUE MEANINGS of the 3 main trigonometric ratios**when used in the context of a**right triangle**. Interact with the applet below for a few minutes and then answer the questions that follow.