Maths teacher at your service

When it comes to trig - SOHCAHTOA is your friend. I have my students write it down every time they see a trig question... What it helps you to remember is that Sine is Opposite over Hypotenuse, Cosine is Adjacent over Hypotenuse and Tangent is Opposite over Adjacent.

Does that answer your question?

I also find that it helps to figure out which one to use if you label the side of the triangle you are using with the letters O, A or H and that helps you see which one you need to use.

It's really hard doing this without diagrams! If anything's fuzzy, let me know and I'll do my best to clarify for you.

BW