where we pick the solution for this system such that . Then we find
Note that you can always find a solution to the system above that satisfies as long as . What this means is that you can always find the value of as a (constant) function of .
We know that applying the Pythagoras theorem LM²=LV²+VM² LM is the radius of the circle LV=5 in VM=12/2----> 6 in so LM²=5²+6²-----> LM²=61------> LM=7.81 in------> LM=7.8 in