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OpenStudy (anonymous):
In the abbreviation of the trigonometric form of a complex number, r times c i s of theta., what does the s represent? A. secant B. sine C. square root D. sum
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OpenStudy (anonymous):
sine
OpenStudy (tkhunny):
\(cis(\theta) = \cos(\theta) + i\cdot\sin(\theta)\) "c": cosine "i": i "s": sine
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