For if you’re stuck on that last problem:

Sin (Sine) is the value opposite (but never the largest side) of X divided by the largest side (line XY)

Cos (Cosine) is the value adjacent (but never the largest side) to X divided by the largest side (line XY)

Tan (Tangent) is the value opposite (but never the largest side) of X divided by the value adjacent (but never the largest side) to X

h (Hypotenuse) will come in handy later, it is always the longest side which is line XY in this case, with value 16

So in this case,

Sin = 8 divided by 16

Cos = 8-Г3 (about 13.86) divided by 16

Tan = 8 divided by 8-Г3 (about 13.86)

Which comes out to,

Sin = 1/2

Cos = about 0.87

Tan = about 0.58