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Imagine

Geometry Level 4

Which of the given options is purely real?

Note: \(i\) is the imaginary unit.

\[\cos{i}\] \[\tan{i}\] \[\sin{i}\] None of these choices

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Excel in math and science

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It's hard to learn from lectures and videos

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including olympiad champions, researchers, and professionals.

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by Digvijay Singh

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