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Niven's theorem - MaRDI portal

Niven's theorem (Q6481867)

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The only rational angles in first quadrant whose sine is rational are 0, 30 and 90 degrees
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Niven's theorem
The only rational angles in first quadrant whose sine is rational are 0, 30 and 90 degrees

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    2781429258
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    /m/0hn88zl
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