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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

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

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including olympiad champions, researchers, and professionals.

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by Digvijay Singh

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