Mike, when I took my Extra I didn't have a scientific calculator so I had to
work all that stuff in my head. I did get someone to look stuff up in trig
tables but I decided if I was doing it I'd do it right. Maybe I'm a little ocd
but I'm doing ok with it <g>.
Tom
Tom Brennan KD5VIJ, CCC-A/SLP
web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html