polars.Series.cos#

Series.cos() → Series[source]#

Compute the element-wise value for the cosine.

Notes

Input values are interpreted as radians. To convert from degrees to radians, call .radians().

Examples

>>> import math
>>> s = pl.Series("a", [0.0, math.pi / 2.0, math.pi])
>>> s.cos()
shape: (3,)
Series: 'a' [f64]
[
    1.0
    6.1232e-17
    -1.0
]