CPM Homework Help : PC Problem 4-141

Find the length of $h$ in terms of $x$ .

Right triangle, vertical leg labeled 10, vertical segment labeled, h, between vertical leg and it's opposite angle, divides the horizontal leg into 2 sections, section between vertical leg & vertical segment labeled 5, section between vertical leg & angle labeled, x.

Hint:

Use similar triangles. It might help to draw the triangles separately before writing your equation.