△ Trigonometry
Side over sine of opposite angle
Formula
Side over sine of opposite angle
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Law of Sines (law of sines) is a trigonometry relationship written as Side over sine of opposite angle or a/sin A = b/sin B = c/sin C. Students use it to solve unknowns when enough values are known.
Write Side over sine of opposite angle, substitute the known numbers carefully, then simplify. Worked walkthrough: a=10, A=30°, B=45° b = 10×sin45°/sin30° ≈ 14.14.
Law of Sines 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 ≈ 14.14. Generate a formula worksheet below for more unique practice sets.
