Angle between 2 vectors.

I have got 2 vectors. How to find the angle between those?

https://www.blender.org/api/blender_python_api_2_77_0/mathutils.html#mathutils.Vector.angle

In the API there are two methods, angle and angle signed.
Angle always gets a positive measurement, while angle signed can tell if it is clockwise or anti clockwise which can be useful sometimes. Like if you want to know whether to turn right or left to reach a target.

Does the project() return a vector pointing to the other vector? This might be good for me:)

Hi! I used acos from dot product beetween the two vectors one time (not really usefull with python but I guess this was for GLSL): http://www.pasteall.org/blend/41992

I haven’t tried, but I guess project = vector * vector.dot(other vector)