a detailed lesson on SOHCAHTOA. This saying is an acronym (like NASA or USA) in which each letter stands for a word.
People use SOHCAHTOA to remember the folling trigonometric ratios:
| S | O | H |
| Sine | Opposite side | Hypotenuse |
| C | A | H |
| Cosine | Adjacent side | Hypotenuse |
| T | O | A |
| Tangent | Opposite side | Adjacent |