Should I use math.sin() here?

Simple use for this, to gradually diffuse speed of the camera’s CFrame in my freelook method, but I don’t know what will best suite my system.

Using Desmos graphing calculator, Here are the graphs.
(red graph uses square root, black graph uses sine)


another graph, green uses the average of both, red is still the square root but now blue is sinear

Use whatever looks good to you, which in the case of camera movement, is pretty subjective.