+118724 $$\frac{sin32}{15}=\frac{sin18.5}{a}\\\\
\frac{15}{sin32}=\frac{a}{sin18.5}\\\\
sin18.5\times\frac{15}{sin32}=a\\\\$$
$${\frac{\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{sin}}{\left({\mathtt{18.5}}^\circ\right)}{\mathtt{\,\times\,}}{\mathtt{15}}}{\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{sin}}{\left({\mathtt{32}}^\circ\right)}}} = {\mathtt{8.981\: \!688\: \!659\: \!618\: \!659\: \!5}}$$
So $$a \approx 8.98\:\:\:\mbox{units}$$
.+118724 $$\frac{sin32}{15}=\frac{sin18.5}{a}\\\\
\frac{15}{sin32}=\frac{a}{sin18.5}\\\\
sin18.5\times\frac{15}{sin32}=a\\\\$$
$${\frac{\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{sin}}{\left({\mathtt{18.5}}^\circ\right)}{\mathtt{\,\times\,}}{\mathtt{15}}}{\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{sin}}{\left({\mathtt{32}}^\circ\right)}}} = {\mathtt{8.981\: \!688\: \!659\: \!618\: \!659\: \!5}}$$
So $$a \approx 8.98\:\:\:\mbox{units}$$
