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Which formula did Euler obtain in 1748 for complex analysis?
Ae^(it) = cos t + i sin t
Be^(it) = cos t - sin t
Ce^(it) = sin t + i cos t
De^(it) = cos t + sin t
Answer & Solution
Correct answer: A. e^(it) = cos t + i sin t
Euler's formula links the complex exponential with cosine and sine.
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