Should I use math.sin() here?

[coolalex1835 (Waltuh)]

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)

[coolalex1835 (Waltuh)]

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

[Pokemoncraft5290 (Based)]

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