Question: Problem 4. (5 points) Consider (cos 0 + i sin 0)4, and use this to show that cos (40) = cos 0 - 6

Problem 4. (5 points) Consider (cos 0 + i sin 0)4, and use this to show that cos (40) = cos 0 - 6 cos 0 sin 0 + sin 0, sin(40) = 4 cos 0 sin (cos 0 sin 0).

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