## Geometry: Common Core (15th Edition)

$\approx 11.5$
The Trigonometric ratios for $sine$ function can be written as follows: $\ Sin=\dfrac{Opposite}{hypotenuse}$ We are given that the length of hypotenuse and the angle. Our aim is to compute the side of opposite to the angle. Therefore, $\sin 35^{\circ}=\dfrac{x}{20}$ This implies that $x=20 \sin 35^{\circ} \approx 11.5$