## Trigonometry (11th Edition) Clone

$(5, 315^\circ)$ = $3.536 - 3.536i$
$(5, 315^\circ)$ is equivalent to $5cis315^\circ$ $5cis315^\circ$ = $5(cos315^\circ + isin315^\circ)$ = $5(\frac{\sqrt{2}}{2} - \frac{\sqrt{2}}{2}i)$ = $3.536 - 3.536i$