1. 1. A 3 curve has an angle of intersection of 24, what is the deflection angle at station 10+120 when PC is at station 10+000
2. 2. A compound curve has a common tangent equal to 140 m. the first curve has a radius equal to 194 m and has a subtended angle of 24 while the second curve has a central angle of 34. Determine the tangent distance passing through PC.
3. 3. An 80 m spiral curve has an external distance of 25 m. determine the radius of central curve if the angle of intersection of spiral tangents is 40.