Let z = 11 (cosine (StartFraction pi Over 12 EndFraction) I sine (StartFraction pi Over 12 EndFraction) ) and w = 7 (cosine (StartFraction pi Over 12 EndFraction) I sine (StartFraction pi Over 12 EndFraction) ). What is zw?

Let z 11 cosine StartFraction pi Over 12 EndFraction I sine StartFraction pi Over 12 EndFraction and w 7 cosine StartFraction pi Over 12 EndFraction I sine Star class=