diff --git a/manimlib/utils/space_ops.py b/manimlib/utils/space_ops.py
index 959fd198..196707ca 100644
--- a/manimlib/utils/space_ops.py
+++ b/manimlib/utils/space_ops.py
@@ -7,6 +7,7 @@ from manimlib.constants import PI
 from manimlib.constants import RIGHT
 from manimlib.constants import TAU
 from manimlib.utils.iterables import adjacent_pairs
+from manimlib.utils.simple_functions import fdiv
 
 
 def get_norm(vect):
@@ -140,10 +141,12 @@ def angle_of_vector(vector):
 def angle_between_vectors(v1, v2):
     """
     Returns the angle between two 3D vectors.
-    This angle will always be btw 0 and TAU/2.
+    This angle will always be btw 0 and pi
     """
-    diff = (angle_of_vector(v1) - angle_of_vector(v2)) % TAU
-    return min(diff, TAU - diff)
+    return np.arccos(fdiv(
+        np.dot(v1, v2),
+        get_norm(v1) * get_norm(v2)
+    ))
 
 
 def project_along_vector(point, vector):