Consider (cosine (startfraction pi over 2 endfraction) = i sine (startfraction pi over 2 endfraction) ) and z = 3 (cosine (startfraction 3 pi over 2 endfraction) = i sine (startfraction 3 pi over 2 endfraction) ). What is w + z expressed in polar form? cos(0) + sin(0) cosine (startfraction pi over 2 endfraction) + i sine (startfraction pi over 2 endfraction) cosine (pi) + i sine (pi) cosine (startfraction 3 pi over 2 endfraction) + i sine (startfraction 3 pi over 2 endfraction).