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

As we know the sum of all the angles of a triangle are 180° 65°+70°+α = 180° α=180° - (65° +70°) α=180° -135° α=45° Using theorem 11.4.2 Law of sines: $\frac{sine 45°}{5 ft}$ = $\frac{sine 70°}{x}$ x = $\frac{sine 70°}{sine 45°}$ *5 x = 6.6ft