SOLUTION: [3(cos100+isin100)]^3

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Question 420880: [3(cos100+isin100)]^3
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
By Euler's theorem, cos%28100%29+%2B+i%2Asin%28100%29+=+e%5E%28100i%29. The expression we are evaluating is . It can be further simplified if the angle is in degrees, by evaluating the cosine and sine of 300, but 300 could be either degrees or radians.