[pre-commit.ci] auto fixes from pre-commit.com hooks

pre-commit-ci[bot] · pre-commit-ci[bot] · commit a9006a4d6abe · 2025-10-25T05:01:08.000Z
for more information, see https://pre-commit.ci
diff --git a/maths/arc_length.py b/maths/arc_length.py
@@ -1,5 +1,6 @@
 from math import pi
 
+
 def arc_length(angle: float, radius: float) -> float:
     """
     Calculate the arc length of a circle.
