B is correct. I’ve noticed that you’ve posted a lot of questions like this, so here’s how I remember it. Soh-Cah-Toa
Soh stands for Sin=Opposite (the side opposite to the angle) over hypotenuse (the side opposite to the right angle)
Cah stands for Cos=Adjecent (the side next to the angle that is not the hypotenuse) over the hypotenuse
Toa stands for Tan=opposite over adjacent
Good luck! Hope I helped you understand.
