Help asap please and please explain so I could try the rest on my own

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

Based on the diagram, match the trigonometric ratios with the corresponding ratios of the sides of the triangle. tiles : cosb sinb tanb sincposs matches: c/b b/a b/c c/a

The tile along the edge of a triangular community pool needs to be replaced? ?