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

sin α = $\frac{8}{17}$ sin β = $\frac{15}{17}$
In given right triangle, applying Pythagorean theorem- $17^{2} = a^{2} + 15^{2}$ Therefore- $a^{2} = 17^{2} - 15^{2}$ = 289 - 225 = 64 a = $\sqrt {64}$ = 8 sin α=$\frac{opposite}{hypotenuse}=\frac{a}{17}=\frac{8}{17}$ sin β=$\frac{opposite}{hypotenuse}=\frac{15}{17}$