## Elementary Geometry for College Students (6th Edition)

$\frac{sine α}{a}$ = $\frac{sine β}{b}$
Using theorem 11.4.2 Law of Sines $\frac{sine α}{a}$ = $\frac{sine β}{b}$ Using the above equation we can find the value of sin α.since we know the value of a,b and β.