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