Hello and welcome. This place is where you can ask what and how can you use sine and cosine in your projects. MethylBTD.scientific(MethylBTD on the forum).
portaled to the [Official] Nerdy Math Topic - where you and others can get plenty of trigonometric help inside and outside of Hopscotch!
specific questions about specific projects can sometimes have their own topic, but more general questions about concepts are great as replies in topics like these. :D