sos

sin(54)*17 = -9.499413830484

sin(54)=w/17

$\begin{array}{rcll} \frac{w}{17} &=& \sin{(54^{\circ})} \qquad | \qquad \cdot 17 \\ w &=& 17 \cdot \sin{(54^{\circ})} \\ w &=& 17 \cdot 0.80901699437 \\ w &=& 13.7532889044 \\ \end{array}$