12. The angle can be worked out by doing 128 (s) minus 45 (q). This gives an answer of 83 degrees.
13. Luis measured angle PTR and forgot to take away the 45 degrees from q
14. For this, there will be one camera at 90 degrees and one either side (45 and 135 degrees). Now, they can see 60 degrees total so let’s assume that that’s 30 either side. I have drawn the rest of how I’d work it out and attached an image
