## Elementary Geometry for College Students (5th Edition)

$\frac{sine β}{8.1}$ = $\frac{sine 86°}{8.4}$
Given b=8.1, c=8.4, γ=86° Using theorem 11.4.2 By law of sines $\frac{sine β}{b}$ = $\frac{sine γ}{c}$ $\frac{sine β}{8.1}$ = $\frac{sine 86°}{8.4}$