PostgreSQL/Math Functions/cot

cot(x): Returns the cotangent of x

postgres=# -- cot(x): Returns the cotangent of x
postgres=# SELECT cot(1), cot(-1);
        cot        |        cot
-------------------+--------------------
 0.642092615934331 | -0.642092615934331
(1 row)
postgres=#
postgres=#