Expr.cot

methodView source ↗

def cot() -> TdExpr

Categories: numeric

Calculate the cotangent of the element value.

Examples

>>> import tabsdata as td
>>>
>>> tf: td.TableFrame ...
>>>
>>> tf = tf.select(td.col("val"), td.col("val").cot().alias("cot"))
>>>
┌──────┬───────────┐
│ val  ┆ cot       │
│ ---  ┆ ---       │
│ f64  ┆ f64       │
╞══════╪═══════════╡
│ 0.1  ┆ 9.966644  │
│ 1.5  ┆ 0.070915  │
│ 1.8  ┆ -0.233304 │
│ 6.0  ┆ -3.436353 │
│ 6.0  ┆ -3.436353 │
│ 7.5  ┆ 0.369547  │
│ null ┆ null      │
└──────┴───────────┘