Home › AP EAPCET (Engineering) › Mathematics › Algebra: De Moivre's Theorem › Evaluate (cos 60° + i sin 60°)^6.
Evaluate (cos 60° + i sin 60°)^6.
A1
Bi
C−1
D−i
Answer & Solution
Correct answer: A. 1
Six times 60 degrees is 360 degrees, so the result is cos 360° + i sin 360° = 1.
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