## Elementary Geometry for College Students (7th Edition) Clone

Using theorem 11.4.2 Law of sines: $\frac{sine α}{a}$ = $\frac{sine γ}{b}$ $\frac{sine 80°}{12 in}$ = $\frac{sine γ}{10 in}$ sine γ = $\frac{sine 80°}{12 in}$ * 10 in sine γ = 0.8206 γ = $sin^{-1}$(0.8206) γ = 55.1°