cudf.DataFrame.acos#
- DataFrame.acos()#
Get Trigonometric inverse cosine, element-wise.
The inverse of cos so that, if y = x.cos(), then x = y.acos()
- Returns
- DataFrame/Series/Index
Result of the trigonometric operation.
Examples
>>> import cudf >>> ser = cudf.Series([-1, 0, 1, 0.32434, 0.5]) >>> ser.acos() 0 3.141593 1 1.570796 2 0.000000 3 1.240482 4 1.047198 dtype: float64
acos operation on DataFrame:
>>> df = cudf.DataFrame({'first': [-1, 0, 0.5], ... 'second': [0.234, 0.3, 0.1]}) >>> df first second 0 -1.0 0.234 1 0.0 0.300 2 0.5 0.100 >>> df.acos() first second 0 3.141593 1.334606 1 1.570796 1.266104 2 1.047198 1.470629
acos operation on Index:
>>> index = cudf.Index([-1, 0.4, 1, 0, 0.3]) >>> index Float64Index([-1.0, 0.4, 1.0, 0.0, 0.3], dtype='float64') >>> index.acos() Float64Index([ 3.141592653589793, 1.1592794807274085, 0.0, 1.5707963267948966, 1.266103672779499], dtype='float64')