convert -1.7 rad to degrees
$$-1.7 \mathrm{~rad~} \cdot \frac{360\ensurement{^{\circ}}}{2\pi \mathrm{~rad~}}\\\\=-1.7 \cdot \frac{180\ensurement{^{\circ}}}{\pi} \\\\= -97.4028251722\ensurement{^{\circ}}\\\mathrm{ }\\ \hline\\$$
