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

$c\approx8.8$ $d\approx28.7$
$\sin17^{\circ}=\frac{c}{30}$ $c=30\times\sin17^{\circ}$ $c\approx8.8$ Using Pythagorean Theorem to find $d$. $d=\sqrt {30^{2}-c^{2}}$ $d\approx\sqrt{30^{2}-8.8^{2}}$ $d\approx28.7$