The capital Greek letter (capital tau) is visually very similar to the upper-case Latin letter T. For that reason, refer to the usage of Capital T for how the symbol appears in math.
Symbol | Format | Data |
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Τ | Unicode |
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TeX |
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SVG |
The Greek letter τ (tau) is used in trigonometry as a constant to represent a full rotation around a circle in radians. The value of τ is approximately 6.28 and can be calculated by dividing any circle's circumference by its radius.