At first I thought this was geometry, but it's precalculus... (the next idea is geometry, which is a good thing because I'm not sure if this way works...

***Can this work? There is a number on one length of each triangle, and a NV on another... Numbers can not be used with NV in an equation. Here is a graph used to create an idea for precalculus... A number must be used to do this to create a triangle with one side given the length of 1.

The precalculus rules must be disassembled completely and reassembled using NV to see if it works.