law of sines

Noun

 * 1)  A statement that relates the lengths of the sides of a triangle to the sines of its angles.

Usage notes
Let $a, b$, and $c$ be the lengths of the sides of a triangle opposite angles $A, B$, and $C$. The law of sines states that $$ \frac{a}{\sin{A}} \,=\, \frac{b}{\sin{B}} \,=\, \frac{c}{\sin{C}} \,=\, 2R$$, where $R$ is the radius of the triangle's circumcircle.

Translations

 * Finnish: sinilause
 * German:
 * Hungarian:
 * Romanian: teorema sinusului
 * Tagalog: sinwaying batas