PostgreSQL/Math Functions/radians

radians(d): Returns radian equivalent to d degrees

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postgres=# -- radians(d): Returns radian equivalent to d degrees postgres=# SELECT radians(180) AS half_circle, postgres-# radians(360) AS full_circle;

  half_circle    |   full_circle

---

+------------------

3.14159265358979 | 6.28318530717959

(1 row) postgres=#

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