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Symbol | Definition |
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≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |
sextant is the unit of plane angle, equals to 60°.
A turn is used in anglular measurement equal to 360 degrees. Plural name is turns.