[DanDon]

It was reasonably accurate up to ~133 (Where it was about 1.5 feet off) inches, not 200 as I previously (mistakenly) stated. And yes im sure it is inches.

Is there any observable problem with the algorithm?

With regards to the calculation of tangent, I am using a lookup table with values for angles between 1 degree and 90 degrees.

I'm going to try to get the target mounted higher up, but due to the fact that disregarding the gym, all our rooms have 7-8 ft high ceilings, it is going to be pretty hard.

Thanks for the help,