a survey line cd intersects a building to overcome the obstacle a perpendicular DE 87m long is set out at D from E two lines EF and EG are set out at angles of 50 and 65 respectively with ED find the lengths EF and EG such that points F and G fall on the prolongation of CD also find the obstructed distance DF
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a survey line cd intersects a building to overcome the obstacle a perpendicular DE 87m long is set out at D from E two lines EF and EG are set out at angles of 50 and 65 respectively with ED find the lengths EF and EG such that points F and G fall on the prolongation of CD also find the obstructed distance DF
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