△ Trigonometry
Right triangle ratio
Formula
Right triangle ratio
Pick a grade — we’ll generate a matching worksheet for Cosine right here.
Cosine (cos) is a trigonometry relationship written as Right triangle ratio or cos θ = adjacent / hypotenuse. Students use it to solve unknowns when enough values are known.
Write Right triangle ratio, substitute the known numbers carefully, then simplify. Worked walkthrough: adj = 4 hyp = 5 cos θ = 4/5 = 0.8.
Cosine usually appears in trigonometry units during middle or secondary school. Match difficulty with MathDigits grade worksheets so practice fits the curriculum year.
On this page the worked result is 0.8. Generate a formula worksheet below for more unique practice sets.
