It ia easy to remember that adjacent requires tangent, and opposile requires cosine, from the letter a being found in the first syllable of ... Given b = 29Ad 12a#39; 50aquot;, and alt; B = 37Ad 26a#39; 21aquot;. We find a 46Ad 55a#39; 2aquot; or a = 133Ad 4a#39; 58aquot;. Notb. We can use either natural or logarithmetic numbers. ... A D = 90Ad; therefore the aro A C is the measure of the angle A D B. If the alt; D A B is less than 90Ad, then D B is less than 90Ad.
|Title||:||The Civil-engineer & Surveyor's Manual: Comprising Surveying, Engineering, Practical Astronomy, Geodetical Jurisprudence, Analyses of Minerals, Soils, Grains, Vegetables, Valuation of Lands, Buildings, Permanent Structures, Etc|