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Niven's theorem · Vinony

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EntityQ4116459· pop 14· linked from 10 articles

Niven's theorem

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

Connections

rational number

Categories

Rational numbers Theorems in algebra Theorems in geometry Trigonometry

Sources

wikipedia.externallinksexternallink

digital object identifier

Entity

irrational number

trigonometric function

algebraic number

Pythagorean triple

Euler's totient function

Eric W. Weisstein

Mathematical Reviews

Mathematical Association of America

Derrick Henry Lehmer

sine and cosine

trigonometric number

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What links here10 pages

special right triangle

integer triangle

rational number

trigonometric number

Pythagorean triple

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