Question

Mechanics Name: 6. While working to establish boundary line AB shown in the figure, a survey crew is confronted by a large hill. In order to continue around this visual obstruction, the chief surveyor sets a new heading that is 50 off line AB, and moves 1480 ft in that direction to point C. He then swings 75 away from this new direction AC, back toward his original line of travel. (6 Marks) a. Compute distance "h", which will place the surveyors on boundary line AB at point B. b. How far along the boundary line has this bypass taken the surveyors, i.e., what is distance AB? 1480 ft C 75°

Answer 1

B A 500 105 480 ft 15

APply Sine rule Sin A Sin B SinC h(ec) The satio of ide in a AC AB sine of the angle and the eppogte. trangle are equal. as dbove Sin 50 Sin 25 ec) 2480 Sins x80 bСвс) - Sin 25 2682.611 f nCec) Sin B Sin C АС AB Sm 10s 1480 A1B 10s AB= Sm 2s AB 3382.651 t
APPLY SINE RULE.