3. Find the following product: -5| cos * + isin 2 cos 6 + isin Express your final answer in rectangular form. Ying Jabbar -5 cos"+isin 2 cos 6 +isin -5 cos 3 + isin 2 cos" +isin k |O 6 =(-5+2). cos 3 + NO +isin + ON =(-5.2). cos NO 3 + No + isin + = -3 cos N|A -+ isin =-10 cos "+isin = -3(0+i) =-10(0+/) =-3/ =-10i