Edward C. answered 01/24/16
Tutor
5.0
(438)
Caltech Grad for math tutoring: Algebra through Calculus
sinx = (length of opposite side) / (length of hypotenuse)
cosx = (length of adjacent side) / hypotenuse
tanx = opposite / adjacent
cscx = hypotenuse / opposite
secx = hypotenuse / adjacent
cotx = adjacent / opposite