Hints to travellers, scientific and general (1901)
Royal Geographical Society (Great Britain) · London, The Royal Geographical Society · leaf 64
C is known, the other is found by subtracting the known angle from 90°. For the rest we have : A Solution. Required. Case. Given. C B = A C X cos C. Hyp. AC Base CB. . 1 { A B = A C X sin C. Perp. A B Angles . . A B = C B X tan C. Perp. A B Base C B 2 & A C = C B X sec C. Angles . . Hyp. AC sin C =…
