Log. 2400´ (in 40°) 3.3802112 Constant log. -4.1015105 ---------- -1.4817217 Log. sin. 35° -1.7585913 ---------- S = -1.2403130 D (as before) = -1.4536500 ---------- S - D (= log. tang. 31° 27´ ½) -1.7866630