1. Let w1 = 1 +√3i and w2 = 1−i. (a) Write w1 and w2 in polar form.

1. Let w1 = 1 +√3i and w2 = 1−i. (a) Write w1 and w2 in polar form.
(b) Hence or otherwise, find the exact value of
w43 1 w87 2
in cartesian coordinates.
Hint: It may help to know that
π 12
=
π 3 −
π 4


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