SOHCAHTOA (https://mathworld.wolfram.com/SOHCAHTOA.html https://mathworld.wolfram.com/SOHCAHTOA.html) is how I learned about the trig functions back in school.

SOHCAHTOA (https://mathworld.wolfram.com/SOHCAHTOA.html https://mathworld.wolfram.com/SOHCAHTOA.html) is how I learned about the trig functions back in school. It's stuck with me all these years, along with the quadratic formula (https://en.wikipedia.org/wiki/Quadratic_formula https://en.wikipedia.org/wiki/Quadratic_formula) from algebra class.