A 202Kb PDF of this article as it appeared in the magazine—complete with images—is available by clicking HERE
You have completed the traverse as shown and would like to check it for closure before returning to the office, but your calculator died. You have that 1 old non-trig function one that at least has an addressable memory , , x2, x , x and if you’re really lucky, a y key and x! key. You have no trig tables but do 3 5 7 9 remember sin x = x x + x x + x (where x is in radians) and cos x2 + sin x2 = 1. 3! 5! 7! 9! Can you check it? (The bearing shown is a given.)
The solution to this problem can be found HERE
Dave Lindell, PS, retired after 36 1/2 years with the City of Los Angeles. He keeps surveying part time to stay busy and keep out of trouble.
A 202Kb PDF of this article as it appeared in the magazine—complete with images—is available by clicking HERE