Velocity
Velocity is how fast an object is moving but in a direction. Ex. The car was going 30 Miles per Hour West.
Vectors are Arrows showing where an object is going and how fast/far.
SohCahToa
Soh. The S stands for Sin, O stands for Opposite, H is for Hypothesis.
Cah. The C stands for Cos, A stands for Adjacent, H is for Hypothesis.
Toa. The T is for Tan, O is for Opposite, and A is for Adjacent.
Hypothesis is always the longest side, Adjacent is the side next to the angle your looking for. Opposite is the side across from the angle your trying to find.