Yes, this adjustment for a slanting baseline is critical, and the cross-check for the two determinations is key. Given some time, I plan to go through an analysis of error magnitude on the method for errors of up to +/- 0.5 degrees and distances of +/- 0.5 feet. I use differentials so really large errors aren't appropriate to this form of analysis as I realize you know.
Right now,I'm taking alittle vaction form the math and absorbing the sights and sounds of the western expanses. Hope you are doing well and I look forward to more big tree confirmations from you and others out there in California and Oregon.
Robert T. Leverett
Co-founder and Executive Director
Native Native Tree Society
Co-founder and President
Friends of Mohawk Trail State Forest